"The property cannot be found on this object. Verify that the property exists." 属性 绝对存在

Question

我不明白为什么我不能更改这些变量。如果我在调试模式下将它们键入控制台，然后它会打印这些值。同样奇怪的是，我如何能够更改第 24 行的 allowedRequestors 变量，但不能更改其他任何变量。有谁知道为什么其他变量会发生这种情况？

$FilePath = "C:\Users\Desktop\TestScripts\testBulkAP.csv"

$headers = & $PSScriptRoot\GetToken.ps1

## preparing create Catalog data
$accesspacakgeRequest = '{"displayName":"","description":"sddsds","isHidden":false,"catalogId":"","accessPackageResourceRoleScopes":[],"accessPackageAssignmentPolicies":[{"displayName":"Initial Policy","description":"Initial Policy","durationInDays":365,"expirationDateTime":null,"canExtend":false,"requestApprovalSettings":null,"accessReviewSettings":null,"notificationSettings":null,"additionalInfo":null,"isDenyPolicy":false,"id":"","activeAssignmentCount":0,"accessPackageId":"00000000-0000-0000-0000-000000000000","accessPackageCatalog":null,"createdDateTime":null,"modifiedDateTime":null,"createdBy":"","modifiedBy":"","countOfUsersIncludedInPolicy":null,"requestorSettings":{"acceptRequests":true,"scopeType":"NoSubjects","allowedRequestors":[],"isOnBehalfAllowed":false},"questions":[]}]}'
$emlRequestUrl = "https://graph.microsoft.com/beta/identityGovernance/entitlementManagement/accessPackages"
$accesspacakgeRequestObject = ConvertFrom-Json -InputObject $accesspacakgeRequest

$Content = Import-Csv $FilePath

foreach($assignmentData in $Content) {
    $accesspacakgeRequestObject.catalogId = $assignmentData.catalogId
    $accesspacakgeRequestObject.displayName = $assignmentData.displayName
    $accesspacakgeRequestObject.description = $assignmentData.description
    $accesspacakgeRequestObject.accessPackageAssignmentPolicies.requestorSettings.scopeType = $assignmentData.scope 

    if ($assignmentData.scope -eq "SpecificDirectorySubjects") {
    $accesspacakgeRequestObject.accessPackageAssignmentPolicies.requestorSettings.allowedRequestors += New-Object -TypeName psobject -Property @{'@odata.type' = '#microsoft.graph.groupMembers'; 'id' = $assignmentData.groupId; 'description' = $assignmentData.groupName; 'isBackup' = 'false'}
    }

    $numApprovalStages = [int]$assignmentData.approvalStages

    if ($numApprovalStages -gt 0) {
    $accesspacakgeRequestObject.accessPackageAssignmentPolicies.requestApprovalSettings += New-Object -TypeName psobject -Property @{'approvalMode' = 'Serial'; 'isApprovalRequired' = 'true'; 'isApprovalRequiredForExtension' = 'false'; 'isRequestorJustificationRequired' = 'false'; 'approvalStages' = @()}

    for ($i=1;$i -le [int]$assignmentData.approvalStages; $i++)
    {
        $accesspacakgeRequestObject.accessPackageAssignmentPolicies.requestApprovalSettings.approvalStages += New-Object -TypeName psobject -Property @{'approvalStageTimeOutInDays' = '14'; 'primaryApprovers' = @(); escalationApprovers = @();'isEscalationEnabled' = 'false'; 'escalationTimeInMinutes' = '0'; 'isApproverJustificationRequired' = 'true'}
        $accesspacakgeRequestObject.accessPackageAssignmentPolicies.requestApprovalSettings.approvalStages.primaryApprovers += New-Object -TypeName psobject -Property @{'@odata.type' = '#microsoft.graph.singleUser'; "displayName" = ''; 'objectId' = Get-Variable -Name "assignmentData.approver" -ValueOnly; 'isBackup' = 'false'}
        
    }

    }
    
    
    
    $requestbody = $accesspacakgeRequestObject | ConvertTo-Json -Depth 10
    $response = Invoke-RestMethod $emlRequestUrl -Headers $headers -Method Post -Body $requestbody -UseBasicParsing -ErrorAction Continue
}

错误信息是：

The property 'requestApprovalSettings' cannot be found on this object. Verify that the property exists and can be set.
At C:\Users\Desktop\TestScripts\AddAccessPackageAndPolicyWITHAPPROVER.ps1:30 char:5
+     $accesspacakgeRequestObject.accessPackageAssignmentPolicies.reque ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentException
 
The property 'approvalStages' cannot be found on this object. Verify that the property exists and can be set.
At C:\Users\Desktop\TestScripts\AddAccessPackageAndPolicyWITHAPPROVER.ps1:34 char:9
+         $accesspacakgeRequestObject.accessPackageAssignmentPolicies.r ...
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyNotFound
 
Get-Variable : Cannot find a variable with the name 'assignmentData.approver1'.
At C:\Users\Desktop\TestScripts\AddAccessPackageAndPolicyWITHAPPROVER.ps1:35 char:250
+ ... objectId' = Get-Variable -Name "assignmentData.approver$i" -ValueOnly ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (assignmentData.approver1:String) [Get-Variable], ItemNotFoundException
    + FullyQualifiedErrorId : VariableNotFound,Microsoft.PowerShell.Commands.GetVariableCommand
 
The property 'primaryApprovers' cannot be found on this object. Verify that the property exists and can be set.
At C:\Users\Desktop\TestScripts\AddAccessPackageAndPolicyWITHAPPROVER.ps1:35 char:250
+ ... objectId' = Get-Variable -Name "assignmentData.approver$i" -ValueOnly ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyNotFound

Answer 1

.accessPackageAssignmentPolicies 属性 包含一个 数组（[...] - 包含在 JSON 输入中）。

即使该数组恰好只包含 一个 元素，您仍然需要通过索引 访问它 为了 set 其（唯一）元素的属性；例如：

# Note the `[0]`
$accesspacakgeRequestObject.accessPackageAssignmentPolicies[0].requestorSettings.scopeType = $assignmentData.scope 

请注意，getting 属性 not 严格要求此索引访问，因为称为 member-access enumeration 的功能。

这种可能令人惊讶的不对称性 - 需要 对 设置 的索引访问 - by design, however - see this answer 以获取更多信息。