XML 架构查询 - maxOccurs？
XML Schema Query - maxOccurs?
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:element name="Company">
<xs:complexType>
<xs:sequence>
<xs:element ref="InventoryItemTypes"/>
<xs:element ref="Branches"/>
<xs:element ref="Contractors"/>
<xs:element ref="ServiceTypes"/>
<xs:element ref="Landlords"/>
<xs:element ref="Properties"/>
</xs:sequence>
<xs:attribute name="CompanyName" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="InventoryItemTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="Type" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Branches">
<xs:complexType>
<xs:sequence>
<xs:element ref="Branch" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Branch">
<xs:complexType>
<xs:sequence>
<xs:element ref="Balances"/>
<xs:element ref="Areas"/>
</xs:sequence>
<xs:attribute name="AccountingCode" type="xs:string" use="required"/>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string" use="required"/>
<xs:attribute name="Address3" type="xs:string" use="required"/>
<xs:attribute name="Address4" type="xs:string" use="required"/>
<xs:attribute name="EMail" type="xs:string" use="required"/>
<xs:attribute name="FaxNumber" type="xs:string" use="required"/>
<xs:attribute name="Name" type="xs:string" use="required"/>
<xs:attribute name="PhoneNumber" type="xs:string" use="required"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="VATNumber" type="xs:string" use="required"/>
<xs:attribute name="WebAddress" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Balances">
<xs:complexType>
<xs:sequence>
<xs:element ref="Balance" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Balance">
<xs:complexType>
<xs:attribute name="Balance" type="xs:string" use="required"/>
<xs:attribute name="Name" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Areas">
<xs:complexType>
<xs:sequence>
<xs:element ref="Area" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Area">
<xs:complexType>
<xs:attribute name="Name" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Contractors">
<xs:complexType>
<xs:sequence>
<xs:element ref="Contractor" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Contractor">
<xs:complexType>
<xs:sequence>
<xs:element name="GeneralNotes" type="xs:string"/>
<xs:element ref="BankDetails" minOccurs="0"/>
<xs:element ref="Balances"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string"/>
<xs:attribute name="Address3" type="xs:string"/>
<xs:attribute name="Address4" type="xs:string"/>
<xs:attribute name="BranchRef" type="xs:string" use="required"/>
<xs:attribute name="Country" type="xs:string" use="required"/>
<xs:attribute name="DateOfBirth" type="xs:string"/>
<xs:attribute name="EMail" type="xs:string"/>
<xs:attribute name="EMailLetters" type="xs:string" use="required"/>
<xs:attribute name="Fax" type="xs:string"/>
<xs:attribute name="Forename" type="xs:string" use="required"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
<xs:attribute name="LandPhone" type="xs:string" use="required"/>
<xs:attribute name="Middlename" type="xs:string"/>
<xs:attribute name="Mobile" type="xs:string"/>
<xs:attribute name="NationalInsurance" type="xs:string"/>
<xs:attribute name="Nationality" type="xs:string" use="required"/>
<xs:attribute name="OptOutGeneralMarketing" type="xs:string" use="required"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="Surname" type="xs:string" use="required"/>
<xs:attribute name="Title" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="BankDetails">
<xs:complexType>
<xs:attribute name="AccountName" type="xs:string"/>
<xs:attribute name="AccountNumber" type="xs:string"/>
<xs:attribute name="AccountSortCode" type="xs:string"/>
<xs:attribute name="BICSWIFTCode" type="xs:string"/>
<xs:attribute name="BankAddress1" type="xs:string"/>
<xs:attribute name="BankAddress2" type="xs:string"/>
<xs:attribute name="BankAddress3" type="xs:string"/>
<xs:attribute name="BankAddress4" type="xs:string"/>
<xs:attribute name="BankName" type="xs:string"/>
<xs:attribute name="BankPostcode" type="xs:string"/>
<xs:attribute name="IBANCode" type="xs:string"/>
<xs:attribute name="LegacyBACSReference" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="ServiceTypes">
<xs:complexType>
<xs:sequence>
<xs:element ref="ServiceType" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="ServiceType">
<xs:complexType>
<xs:attribute name="GuaranteedRent" type="xs:string" use="required"/>
<xs:attribute name="GuaranteedRentFee" type="xs:string"/>
<xs:attribute name="ManageBond" type="xs:string" use="required"/>
<xs:attribute name="ManageBondInterest" type="xs:string" use="required"/>
<xs:attribute name="ManageBondScheme" type="xs:string" use="required"/>
<xs:attribute name="ManageCouncilTaxLetters" type="xs:string" use="required"/>
<xs:attribute name="ManageElectricityLetters" type="xs:string" use="required"/>
<xs:attribute name="ManageGasLetters" type="xs:string" use="required"/>
<xs:attribute name="ManageMaintenance" type="xs:string" use="required"/>
<xs:attribute name="ManageNotices" type="xs:string" use="required"/>
<xs:attribute name="ManageRent" type="xs:string" use="required"/>
<xs:attribute name="ManageRentByDD" type="xs:string" use="required"/>
<xs:attribute name="ManageWaterLetters" type="xs:string" use="required"/>
<xs:attribute name="MarketManagedByAgent" type="xs:string" use="required"/>
<xs:attribute name="MigrationManageNotices" type="xs:string" use="required"/>
<xs:attribute name="Name" type="xs:string" use="required"/>
<xs:attribute name="NominalCode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="SendManagementReport" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Landlords">
<xs:complexType>
<xs:sequence>
<xs:element ref="Landlord" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Landlord">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element name="GeneralNotes" type="xs:string"/>
<xs:element ref="BankDetails" minOccurs="0"/>
<xs:element ref="Balances" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string"/>
<xs:attribute name="Address2" type="xs:string"/>
<xs:attribute name="Address3" type="xs:string"/>
<xs:attribute name="Address4" type="xs:string"/>
<xs:attribute name="BranchRef" type="xs:string" use="required"/>
<xs:attribute name="Country" type="xs:string"/>
<xs:attribute name="DPSCustodial" type="xs:string"/>
<xs:attribute name="DateOfBirth" type="xs:string"/>
<xs:attribute name="EMail" type="xs:string"/>
<xs:attribute name="EMailLetters" type="xs:string"/>
<xs:attribute name="Fax" type="xs:string"/>
<xs:attribute name="Forename" type="xs:string"/>
<xs:attribute name="GlobalReference" type="xs:string"/>
<xs:attribute name="GuaranteedRentFeeOveride" type="xs:string"/>
<xs:attribute name="LandPhone" type="xs:string"/>
<xs:attribute name="ManagementFee" type="xs:string"/>
<xs:attribute name="Middlename" type="xs:string"/>
<xs:attribute name="Mobile" type="xs:string"/>
<xs:attribute name="MyDeposits" type="xs:string"/>
<xs:attribute name="NRLApplies" type="xs:string"/>
<xs:attribute name="NRLExemption" type="xs:string"/>
<xs:attribute name="NationalInsurance" type="xs:string"/>
<xs:attribute name="Nationality" type="xs:string"/>
<xs:attribute name="OptOutGeneralMarketing" type="xs:string"/>
<xs:attribute name="Postcode" type="xs:string"/>
<xs:attribute name="Ref" type="xs:string"/>
<xs:attribute name="Share" type="xs:string"/>
<xs:attribute name="Surname" type="xs:string"/>
<xs:attribute name="Title" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="Properties">
<xs:complexType>
<xs:sequence>
<xs:element ref="Property" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Property">
<xs:complexType>
<xs:sequence>
<xs:element ref="MaintenanceJobs"/>
<xs:element ref="Facilities"/>
<xs:element ref="Rooms"/>
<xs:element ref="Landlords" minOccurs="0"/>
<xs:element ref="MaintenanceCertificates"/>
<xs:element ref="Tenancies"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string" use="required"/>
<xs:attribute name="Address3" type="xs:string" use="required"/>
<xs:attribute name="Address4" type="xs:string" use="required"/>
<xs:attribute name="AddressFlatRoomNumber" type="xs:string" use="required"/>
<xs:attribute name="AddressNumber" type="xs:string" use="required"/>
<xs:attribute name="AreaRef" type="xs:string" use="required"/>
<xs:attribute name="Description" type="xs:string" use="required"/>
<xs:attribute name="Directions" type="xs:string" use="required"/>
<xs:attribute name="ElectricityMeter1" type="xs:string"/>
<xs:attribute name="ElectricityMeter1SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter2" type="xs:string"/>
<xs:attribute name="ElectricityMeter2SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter3" type="xs:string"/>
<xs:attribute name="ElectricityMeter3SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter4" type="xs:string"/>
<xs:attribute name="ElectricityMeter4SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter5" type="xs:string"/>
<xs:attribute name="ElectricityMeter5SerialNumber" type="xs:string"/>
<xs:attribute name="GasMeter" type="xs:string"/>
<xs:attribute name="GasMeterSerialNumber" type="xs:string"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="SecurityNotes" type="xs:string"/>
<xs:attribute name="WaterMeter" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="MaintenanceJobs">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Job" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Facilities">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Facility" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Facility">
<xs:complexType>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Rooms">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Room" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="MaintenanceCertificates">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="MaintenanceCertificate" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Tenancies">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Tenancy" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Job">
<xs:complexType>
<xs:sequence>
<xs:element name="Description" type="xs:string"/>
</xs:sequence>
<xs:attribute name="AccessKeysNoAppointment" type="xs:string" use="required"/>
<xs:attribute name="Contractor" type="xs:string"/>
<xs:attribute name="CreatedAt" type="xs:string" use="required"/>
<xs:attribute name="NextActionDate" type="xs:string"/>
<xs:attribute name="NextActionNote" type="xs:string"/>
<xs:attribute name="Priority" type="xs:string" use="required"/>
<xs:attribute name="Status" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="MaintenanceCertificate">
<xs:complexType>
<xs:attribute name="Description" type="xs:string" use="required"/>
<xs:attribute name="DueAt" type="xs:string" use="required"/>
<xs:attribute name="EPCCurrentEER" type="xs:string" use="required"/>
<xs:attribute name="EPCCurrentEI" type="xs:string" use="required"/>
<xs:attribute name="EPCPotentialEER" type="xs:string" use="required"/>
<xs:attribute name="EPCPotentialEI" type="xs:string" use="required"/>
<xs:attribute name="Responsibility" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
<xs:attribute name="ValidFrom" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="Tenancy">
<xs:complexType>
<xs:sequence>
<xs:element ref="ClosingInspections"/>
<xs:element ref="Conditions"/>
<xs:element ref="TenantTypes"/>
<xs:element ref="InventoryItems"/>
<xs:element ref="RentPeriods"/>
<xs:element ref="Tenants"/>
</xs:sequence>
<xs:attribute name="BondScheme" type="xs:string" use="required"/>
<xs:attribute name="CanArrangeAccess" type="xs:string" use="required"/>
<xs:attribute name="ClosingElec1Reading" type="xs:string"/>
<xs:attribute name="ClosingElec2Reading" type="xs:string"/>
<xs:attribute name="ClosingElec3Reading" type="xs:string"/>
<xs:attribute name="ClosingGasReading" type="xs:string"/>
<xs:attribute name="ClosingInspectionCarriedOut" type="xs:string"/>
<xs:attribute name="ClosingInspectionCarriedOutStaff" type="xs:string"/>
<xs:attribute name="ClosingMeterDate" type="xs:string"/>
<xs:attribute name="ClosingWaterReading" type="xs:string"/>
<xs:attribute name="Deposit" type="xs:string" use="required"/>
<xs:attribute name="EndDate" type="xs:string"/>
<xs:attribute name="FixedDate" type="xs:string" use="required"/>
<xs:attribute name="Furnished" type="xs:string" use="required"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
<xs:attribute name="InstructionAccessArrangements" type="xs:string"/>
<xs:attribute name="InstructionAccessMobileNumber1" type="xs:string"/>
<xs:attribute name="InstructionAccessMobileNumber2" type="xs:string"/>
<xs:attribute name="InstructionAccessMobileNumber3" type="xs:string"/>
<xs:attribute name="InstructionAccessName1" type="xs:string"/>
<xs:attribute name="InstructionAccessName2" type="xs:string"/>
<xs:attribute name="InstructionAccessName3" type="xs:string"/>
<xs:attribute name="InstructionSpecialCharge1" type="xs:string"/>
<xs:attribute name="InstructionUtilityCouncilTax" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityElectricity" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityGas" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityTelephone" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityWater" type="xs:string" use="required"/>
<xs:attribute name="IsShare" type="xs:string" use="required"/>
<xs:attribute name="IsSigned" type="xs:string" use="required"/>
<xs:attribute name="IsStudentProperty" type="xs:string" use="required"/>
<xs:attribute name="MaxTerm" type="xs:string" use="required"/>
<xs:attribute name="MinTerm" type="xs:string" use="required"/>
<xs:attribute name="NextInspectionDue" type="xs:string"/>
<xs:attribute name="NextRentCollectionDate" type="xs:string"/>
<xs:attribute name="OpeningElec1Reading" type="xs:string"/>
<xs:attribute name="OpeningElec2Reading" type="xs:string"/>
<xs:attribute name="OpeningElec3Reading" type="xs:string"/>
<xs:attribute name="OpeningElec4Reading" type="xs:string"/>
<xs:attribute name="OpeningElec5Reading" type="xs:string"/>
<xs:attribute name="OpeningGasReading" type="xs:string"/>
<xs:attribute name="OpeningInventoryCarriedOut" type="xs:string"/>
<xs:attribute name="OpeningInventorySignedByTenant" type="xs:string"/>
<xs:attribute name="OpeningWaterReading" type="xs:string"/>
<xs:attribute name="Rent" type="xs:string" use="required"/>
<xs:attribute name="RoomsMax" type="xs:string" use="required"/>
<xs:attribute name="RoomsMin" type="xs:string" use="required"/>
<xs:attribute name="ServiceType" type="xs:string" use="required"/>
<xs:attribute name="StartDate" type="xs:string" use="required"/>
<xs:attribute name="TenancyInspectionRecurrence" type="xs:string" use="required"/>
<xs:attribute name="TenancyInspectionSchedule" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="ClosingInspections">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="ClosingInspection" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Conditions">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element name="Condition" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="TenantTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="TenantType" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="InventoryItems">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="InventoryItem" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="RentPeriods">
<xs:complexType>
<xs:sequence>
<xs:element ref="RentPeriod" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="RentPeriod">
<xs:complexType>
<xs:attribute name="Amount" type="xs:string" use="required"/>
<xs:attribute name="CollectionMethod" type="xs:string" use="required"/>
<xs:attribute name="End" type="xs:string" use="required"/>
<xs:attribute name="RentFrequency" type="xs:string" use="required"/>
<xs:attribute name="Start" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Tenants">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Tenant" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Tenant">
<xs:complexType>
<xs:sequence>
<xs:element name="GeneralNotes" type="xs:string"/>
<xs:element ref="BankDetails" minOccurs="0"/>
<xs:element ref="Balances"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string"/>
<xs:attribute name="Address3" type="xs:string"/>
<xs:attribute name="Address4" type="xs:string"/>
<xs:attribute name="BondHeld" type="xs:string" use="required"/>
<xs:attribute name="BranchRef" type="xs:string" use="required"/>
<xs:attribute name="Country" type="xs:string" use="required"/>
<xs:attribute name="DateOfBirth" type="xs:string"/>
<xs:attribute name="EMail" type="xs:string"/>
<xs:attribute name="EMailLetters" type="xs:string" use="required"/>
<xs:attribute name="Fax" type="xs:string"/>
<xs:attribute name="Forename" type="xs:string" use="required"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
<xs:attribute name="HeadTenant" type="xs:string" use="required"/>
<xs:attribute name="LandPhone" type="xs:string" use="required"/>
<xs:attribute name="Middlename" type="xs:string"/>
<xs:attribute name="Mobile" type="xs:string"/>
<xs:attribute name="NationalInsurance" type="xs:string"/>
<xs:attribute name="Nationality" type="xs:string" use="required"/>
<xs:attribute name="OptOutGeneralMarketing" type="xs:string" use="required"/>
<xs:attribute name="OutstandingRent" type="xs:string" use="required"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="RentAmount" type="xs:string"/>
<xs:attribute name="Surname" type="xs:string" use="required"/>
<xs:attribute name="Title" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Room">
<xs:complexType>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Description" type="xs:string"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="InventoryItem">
<xs:complexType>
<xs:attribute name="Quantity" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="ClosingInspection">
<xs:complexType>
<xs:attribute name="Outcome" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>
大家晚上好，
XML 这里是新手。在 BIDS (SQL Server 2008 r2) 中使用上述模式后，它产生了一个错误：
"... The Xml source document contains multiple "Type" elements and maxOccurs=1 was specified in the Xml schema."
你们哪位好心人能给我指出正确的方向作为解决方案吗？我敢肯定这对内行的人来说相当简单，但即使是在最好的时候我也是一无所知！
提前致谢，
罗布
当你遇到这个错误时，你没有显示你根据你的架构验证的 XML 文档，所以我不得不猜测（如果这不是你问题的解决方案，你肯定必须编辑你的问题并显示 XML 文档）。
这是您 XSD 中定义了一系列 Type 元素的位置：
<xs:element name="InventoryItemTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="Type" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
如果 xs:element 像这样在 xs:sequence 内部，它可以有一个属性 maxOccurs 指定 [=17= 内部允许的此类元素的最大数量] 元素。 maxOccurs 也有一个名为 minOccurs 的对应对象。
如果您没有明确设置，maxOccurs 和 minOccurs 的 默认值 均为 1。所以，上面的 XSD 片段与写
完全一样
<xs:element name="InventoryItemTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="Type" type="xs:string" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
我猜你的 XML 文档有一部分看起来像
<InventoryItemTypes>
<Types/>
<Types/>
</InventoryItemTypes>
并且模式验证抱怨多次出现 Types 并说 "maxOccurs=1 was specified in the Xml schema" 即使您没有在 XML 模式中明确写入它。
有关更多详细信息，请参阅 relevant part of the XML Schema specification。
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:element name="Company">
<xs:complexType>
<xs:sequence>
<xs:element ref="InventoryItemTypes"/>
<xs:element ref="Branches"/>
<xs:element ref="Contractors"/>
<xs:element ref="ServiceTypes"/>
<xs:element ref="Landlords"/>
<xs:element ref="Properties"/>
</xs:sequence>
<xs:attribute name="CompanyName" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="InventoryItemTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="Type" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Branches">
<xs:complexType>
<xs:sequence>
<xs:element ref="Branch" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Branch">
<xs:complexType>
<xs:sequence>
<xs:element ref="Balances"/>
<xs:element ref="Areas"/>
</xs:sequence>
<xs:attribute name="AccountingCode" type="xs:string" use="required"/>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string" use="required"/>
<xs:attribute name="Address3" type="xs:string" use="required"/>
<xs:attribute name="Address4" type="xs:string" use="required"/>
<xs:attribute name="EMail" type="xs:string" use="required"/>
<xs:attribute name="FaxNumber" type="xs:string" use="required"/>
<xs:attribute name="Name" type="xs:string" use="required"/>
<xs:attribute name="PhoneNumber" type="xs:string" use="required"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="VATNumber" type="xs:string" use="required"/>
<xs:attribute name="WebAddress" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Balances">
<xs:complexType>
<xs:sequence>
<xs:element ref="Balance" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Balance">
<xs:complexType>
<xs:attribute name="Balance" type="xs:string" use="required"/>
<xs:attribute name="Name" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Areas">
<xs:complexType>
<xs:sequence>
<xs:element ref="Area" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Area">
<xs:complexType>
<xs:attribute name="Name" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Contractors">
<xs:complexType>
<xs:sequence>
<xs:element ref="Contractor" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Contractor">
<xs:complexType>
<xs:sequence>
<xs:element name="GeneralNotes" type="xs:string"/>
<xs:element ref="BankDetails" minOccurs="0"/>
<xs:element ref="Balances"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string"/>
<xs:attribute name="Address3" type="xs:string"/>
<xs:attribute name="Address4" type="xs:string"/>
<xs:attribute name="BranchRef" type="xs:string" use="required"/>
<xs:attribute name="Country" type="xs:string" use="required"/>
<xs:attribute name="DateOfBirth" type="xs:string"/>
<xs:attribute name="EMail" type="xs:string"/>
<xs:attribute name="EMailLetters" type="xs:string" use="required"/>
<xs:attribute name="Fax" type="xs:string"/>
<xs:attribute name="Forename" type="xs:string" use="required"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
<xs:attribute name="LandPhone" type="xs:string" use="required"/>
<xs:attribute name="Middlename" type="xs:string"/>
<xs:attribute name="Mobile" type="xs:string"/>
<xs:attribute name="NationalInsurance" type="xs:string"/>
<xs:attribute name="Nationality" type="xs:string" use="required"/>
<xs:attribute name="OptOutGeneralMarketing" type="xs:string" use="required"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="Surname" type="xs:string" use="required"/>
<xs:attribute name="Title" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="BankDetails">
<xs:complexType>
<xs:attribute name="AccountName" type="xs:string"/>
<xs:attribute name="AccountNumber" type="xs:string"/>
<xs:attribute name="AccountSortCode" type="xs:string"/>
<xs:attribute name="BICSWIFTCode" type="xs:string"/>
<xs:attribute name="BankAddress1" type="xs:string"/>
<xs:attribute name="BankAddress2" type="xs:string"/>
<xs:attribute name="BankAddress3" type="xs:string"/>
<xs:attribute name="BankAddress4" type="xs:string"/>
<xs:attribute name="BankName" type="xs:string"/>
<xs:attribute name="BankPostcode" type="xs:string"/>
<xs:attribute name="IBANCode" type="xs:string"/>
<xs:attribute name="LegacyBACSReference" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="ServiceTypes">
<xs:complexType>
<xs:sequence>
<xs:element ref="ServiceType" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="ServiceType">
<xs:complexType>
<xs:attribute name="GuaranteedRent" type="xs:string" use="required"/>
<xs:attribute name="GuaranteedRentFee" type="xs:string"/>
<xs:attribute name="ManageBond" type="xs:string" use="required"/>
<xs:attribute name="ManageBondInterest" type="xs:string" use="required"/>
<xs:attribute name="ManageBondScheme" type="xs:string" use="required"/>
<xs:attribute name="ManageCouncilTaxLetters" type="xs:string" use="required"/>
<xs:attribute name="ManageElectricityLetters" type="xs:string" use="required"/>
<xs:attribute name="ManageGasLetters" type="xs:string" use="required"/>
<xs:attribute name="ManageMaintenance" type="xs:string" use="required"/>
<xs:attribute name="ManageNotices" type="xs:string" use="required"/>
<xs:attribute name="ManageRent" type="xs:string" use="required"/>
<xs:attribute name="ManageRentByDD" type="xs:string" use="required"/>
<xs:attribute name="ManageWaterLetters" type="xs:string" use="required"/>
<xs:attribute name="MarketManagedByAgent" type="xs:string" use="required"/>
<xs:attribute name="MigrationManageNotices" type="xs:string" use="required"/>
<xs:attribute name="Name" type="xs:string" use="required"/>
<xs:attribute name="NominalCode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="SendManagementReport" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Landlords">
<xs:complexType>
<xs:sequence>
<xs:element ref="Landlord" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Landlord">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element name="GeneralNotes" type="xs:string"/>
<xs:element ref="BankDetails" minOccurs="0"/>
<xs:element ref="Balances" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string"/>
<xs:attribute name="Address2" type="xs:string"/>
<xs:attribute name="Address3" type="xs:string"/>
<xs:attribute name="Address4" type="xs:string"/>
<xs:attribute name="BranchRef" type="xs:string" use="required"/>
<xs:attribute name="Country" type="xs:string"/>
<xs:attribute name="DPSCustodial" type="xs:string"/>
<xs:attribute name="DateOfBirth" type="xs:string"/>
<xs:attribute name="EMail" type="xs:string"/>
<xs:attribute name="EMailLetters" type="xs:string"/>
<xs:attribute name="Fax" type="xs:string"/>
<xs:attribute name="Forename" type="xs:string"/>
<xs:attribute name="GlobalReference" type="xs:string"/>
<xs:attribute name="GuaranteedRentFeeOveride" type="xs:string"/>
<xs:attribute name="LandPhone" type="xs:string"/>
<xs:attribute name="ManagementFee" type="xs:string"/>
<xs:attribute name="Middlename" type="xs:string"/>
<xs:attribute name="Mobile" type="xs:string"/>
<xs:attribute name="MyDeposits" type="xs:string"/>
<xs:attribute name="NRLApplies" type="xs:string"/>
<xs:attribute name="NRLExemption" type="xs:string"/>
<xs:attribute name="NationalInsurance" type="xs:string"/>
<xs:attribute name="Nationality" type="xs:string"/>
<xs:attribute name="OptOutGeneralMarketing" type="xs:string"/>
<xs:attribute name="Postcode" type="xs:string"/>
<xs:attribute name="Ref" type="xs:string"/>
<xs:attribute name="Share" type="xs:string"/>
<xs:attribute name="Surname" type="xs:string"/>
<xs:attribute name="Title" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="Properties">
<xs:complexType>
<xs:sequence>
<xs:element ref="Property" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Property">
<xs:complexType>
<xs:sequence>
<xs:element ref="MaintenanceJobs"/>
<xs:element ref="Facilities"/>
<xs:element ref="Rooms"/>
<xs:element ref="Landlords" minOccurs="0"/>
<xs:element ref="MaintenanceCertificates"/>
<xs:element ref="Tenancies"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string" use="required"/>
<xs:attribute name="Address3" type="xs:string" use="required"/>
<xs:attribute name="Address4" type="xs:string" use="required"/>
<xs:attribute name="AddressFlatRoomNumber" type="xs:string" use="required"/>
<xs:attribute name="AddressNumber" type="xs:string" use="required"/>
<xs:attribute name="AreaRef" type="xs:string" use="required"/>
<xs:attribute name="Description" type="xs:string" use="required"/>
<xs:attribute name="Directions" type="xs:string" use="required"/>
<xs:attribute name="ElectricityMeter1" type="xs:string"/>
<xs:attribute name="ElectricityMeter1SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter2" type="xs:string"/>
<xs:attribute name="ElectricityMeter2SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter3" type="xs:string"/>
<xs:attribute name="ElectricityMeter3SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter4" type="xs:string"/>
<xs:attribute name="ElectricityMeter4SerialNumber" type="xs:string"/>
<xs:attribute name="ElectricityMeter5" type="xs:string"/>
<xs:attribute name="ElectricityMeter5SerialNumber" type="xs:string"/>
<xs:attribute name="GasMeter" type="xs:string"/>
<xs:attribute name="GasMeterSerialNumber" type="xs:string"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="Ref" type="xs:string" use="required"/>
<xs:attribute name="SecurityNotes" type="xs:string"/>
<xs:attribute name="WaterMeter" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="MaintenanceJobs">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Job" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Facilities">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Facility" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Facility">
<xs:complexType>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Rooms">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Room" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="MaintenanceCertificates">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="MaintenanceCertificate" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Tenancies">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Tenancy" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Job">
<xs:complexType>
<xs:sequence>
<xs:element name="Description" type="xs:string"/>
</xs:sequence>
<xs:attribute name="AccessKeysNoAppointment" type="xs:string" use="required"/>
<xs:attribute name="Contractor" type="xs:string"/>
<xs:attribute name="CreatedAt" type="xs:string" use="required"/>
<xs:attribute name="NextActionDate" type="xs:string"/>
<xs:attribute name="NextActionNote" type="xs:string"/>
<xs:attribute name="Priority" type="xs:string" use="required"/>
<xs:attribute name="Status" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="MaintenanceCertificate">
<xs:complexType>
<xs:attribute name="Description" type="xs:string" use="required"/>
<xs:attribute name="DueAt" type="xs:string" use="required"/>
<xs:attribute name="EPCCurrentEER" type="xs:string" use="required"/>
<xs:attribute name="EPCCurrentEI" type="xs:string" use="required"/>
<xs:attribute name="EPCPotentialEER" type="xs:string" use="required"/>
<xs:attribute name="EPCPotentialEI" type="xs:string" use="required"/>
<xs:attribute name="Responsibility" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
<xs:attribute name="ValidFrom" type="xs:string"/>
</xs:complexType>
</xs:element>
<xs:element name="Tenancy">
<xs:complexType>
<xs:sequence>
<xs:element ref="ClosingInspections"/>
<xs:element ref="Conditions"/>
<xs:element ref="TenantTypes"/>
<xs:element ref="InventoryItems"/>
<xs:element ref="RentPeriods"/>
<xs:element ref="Tenants"/>
</xs:sequence>
<xs:attribute name="BondScheme" type="xs:string" use="required"/>
<xs:attribute name="CanArrangeAccess" type="xs:string" use="required"/>
<xs:attribute name="ClosingElec1Reading" type="xs:string"/>
<xs:attribute name="ClosingElec2Reading" type="xs:string"/>
<xs:attribute name="ClosingElec3Reading" type="xs:string"/>
<xs:attribute name="ClosingGasReading" type="xs:string"/>
<xs:attribute name="ClosingInspectionCarriedOut" type="xs:string"/>
<xs:attribute name="ClosingInspectionCarriedOutStaff" type="xs:string"/>
<xs:attribute name="ClosingMeterDate" type="xs:string"/>
<xs:attribute name="ClosingWaterReading" type="xs:string"/>
<xs:attribute name="Deposit" type="xs:string" use="required"/>
<xs:attribute name="EndDate" type="xs:string"/>
<xs:attribute name="FixedDate" type="xs:string" use="required"/>
<xs:attribute name="Furnished" type="xs:string" use="required"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
<xs:attribute name="InstructionAccessArrangements" type="xs:string"/>
<xs:attribute name="InstructionAccessMobileNumber1" type="xs:string"/>
<xs:attribute name="InstructionAccessMobileNumber2" type="xs:string"/>
<xs:attribute name="InstructionAccessMobileNumber3" type="xs:string"/>
<xs:attribute name="InstructionAccessName1" type="xs:string"/>
<xs:attribute name="InstructionAccessName2" type="xs:string"/>
<xs:attribute name="InstructionAccessName3" type="xs:string"/>
<xs:attribute name="InstructionSpecialCharge1" type="xs:string"/>
<xs:attribute name="InstructionUtilityCouncilTax" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityElectricity" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityGas" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityTelephone" type="xs:string" use="required"/>
<xs:attribute name="InstructionUtilityWater" type="xs:string" use="required"/>
<xs:attribute name="IsShare" type="xs:string" use="required"/>
<xs:attribute name="IsSigned" type="xs:string" use="required"/>
<xs:attribute name="IsStudentProperty" type="xs:string" use="required"/>
<xs:attribute name="MaxTerm" type="xs:string" use="required"/>
<xs:attribute name="MinTerm" type="xs:string" use="required"/>
<xs:attribute name="NextInspectionDue" type="xs:string"/>
<xs:attribute name="NextRentCollectionDate" type="xs:string"/>
<xs:attribute name="OpeningElec1Reading" type="xs:string"/>
<xs:attribute name="OpeningElec2Reading" type="xs:string"/>
<xs:attribute name="OpeningElec3Reading" type="xs:string"/>
<xs:attribute name="OpeningElec4Reading" type="xs:string"/>
<xs:attribute name="OpeningElec5Reading" type="xs:string"/>
<xs:attribute name="OpeningGasReading" type="xs:string"/>
<xs:attribute name="OpeningInventoryCarriedOut" type="xs:string"/>
<xs:attribute name="OpeningInventorySignedByTenant" type="xs:string"/>
<xs:attribute name="OpeningWaterReading" type="xs:string"/>
<xs:attribute name="Rent" type="xs:string" use="required"/>
<xs:attribute name="RoomsMax" type="xs:string" use="required"/>
<xs:attribute name="RoomsMin" type="xs:string" use="required"/>
<xs:attribute name="ServiceType" type="xs:string" use="required"/>
<xs:attribute name="StartDate" type="xs:string" use="required"/>
<xs:attribute name="TenancyInspectionRecurrence" type="xs:string" use="required"/>
<xs:attribute name="TenancyInspectionSchedule" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="ClosingInspections">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="ClosingInspection" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Conditions">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element name="Condition" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="TenantTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="TenantType" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="InventoryItems">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="InventoryItem" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="RentPeriods">
<xs:complexType>
<xs:sequence>
<xs:element ref="RentPeriod" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="RentPeriod">
<xs:complexType>
<xs:attribute name="Amount" type="xs:string" use="required"/>
<xs:attribute name="CollectionMethod" type="xs:string" use="required"/>
<xs:attribute name="End" type="xs:string" use="required"/>
<xs:attribute name="RentFrequency" type="xs:string" use="required"/>
<xs:attribute name="Start" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Tenants">
<xs:complexType>
<xs:sequence minOccurs="0">
<xs:element ref="Tenant" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Tenant">
<xs:complexType>
<xs:sequence>
<xs:element name="GeneralNotes" type="xs:string"/>
<xs:element ref="BankDetails" minOccurs="0"/>
<xs:element ref="Balances"/>
</xs:sequence>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Address2" type="xs:string"/>
<xs:attribute name="Address3" type="xs:string"/>
<xs:attribute name="Address4" type="xs:string"/>
<xs:attribute name="BondHeld" type="xs:string" use="required"/>
<xs:attribute name="BranchRef" type="xs:string" use="required"/>
<xs:attribute name="Country" type="xs:string" use="required"/>
<xs:attribute name="DateOfBirth" type="xs:string"/>
<xs:attribute name="EMail" type="xs:string"/>
<xs:attribute name="EMailLetters" type="xs:string" use="required"/>
<xs:attribute name="Fax" type="xs:string"/>
<xs:attribute name="Forename" type="xs:string" use="required"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
<xs:attribute name="HeadTenant" type="xs:string" use="required"/>
<xs:attribute name="LandPhone" type="xs:string" use="required"/>
<xs:attribute name="Middlename" type="xs:string"/>
<xs:attribute name="Mobile" type="xs:string"/>
<xs:attribute name="NationalInsurance" type="xs:string"/>
<xs:attribute name="Nationality" type="xs:string" use="required"/>
<xs:attribute name="OptOutGeneralMarketing" type="xs:string" use="required"/>
<xs:attribute name="OutstandingRent" type="xs:string" use="required"/>
<xs:attribute name="Postcode" type="xs:string" use="required"/>
<xs:attribute name="RentAmount" type="xs:string"/>
<xs:attribute name="Surname" type="xs:string" use="required"/>
<xs:attribute name="Title" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="Room">
<xs:complexType>
<xs:attribute name="Address1" type="xs:string" use="required"/>
<xs:attribute name="Description" type="xs:string"/>
<xs:attribute name="GlobalReference" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="InventoryItem">
<xs:complexType>
<xs:attribute name="Quantity" type="xs:string" use="required"/>
<xs:attribute name="Type" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
<xs:element name="ClosingInspection">
<xs:complexType>
<xs:attribute name="Outcome" type="xs:string" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>
大家晚上好，
XML 这里是新手。在 BIDS (SQL Server 2008 r2) 中使用上述模式后，它产生了一个错误：
"... The Xml source document contains multiple "Type" elements and maxOccurs=1 was specified in the Xml schema."
你们哪位好心人能给我指出正确的方向作为解决方案吗？我敢肯定这对内行的人来说相当简单，但即使是在最好的时候我也是一无所知！
提前致谢，
罗布
当你遇到这个错误时，你没有显示你根据你的架构验证的 XML 文档，所以我不得不猜测（如果这不是你问题的解决方案，你肯定必须编辑你的问题并显示 XML 文档）。
这是您 XSD 中定义了一系列 Type 元素的位置：
<xs:element name="InventoryItemTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="Type" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
如果 xs:element 像这样在 xs:sequence 内部，它可以有一个属性 maxOccurs 指定 [=17= 内部允许的此类元素的最大数量] 元素。 maxOccurs 也有一个名为 minOccurs 的对应对象。
如果您没有明确设置，maxOccurs 和 minOccurs 的 默认值 均为 1。所以，上面的 XSD 片段与写
<xs:element name="InventoryItemTypes">
<xs:complexType>
<xs:sequence>
<xs:element name="Type" type="xs:string" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
</xs:element>
我猜你的 XML 文档有一部分看起来像
<InventoryItemTypes>
<Types/>
<Types/>
</InventoryItemTypes>
并且模式验证抱怨多次出现 Types 并说 "maxOccurs=1 was specified in the Xml schema" 即使您没有在 XML 模式中明确写入它。
有关更多详细信息，请参阅 relevant part of the XML Schema specification。