我无法使用 neteller API

I am unable to use neteller API

$accessToken = $this->_netellerAccess();
                  $data_string = '{
                   "paymentMethod": {
                  "type": "neteller",
                  "value": "ashutosh12@avainfotech.com"
               },
               "transaction": {
                  "merchantRefId": "26434256",
                  "amount": 10,
                  "currency": "USD"
               },
               "verificationCode": "234124"
                   }';
                 $token=$accessToken['accessToken'];
                $ch = curl_init('https://api.neteller.com/v1/transferOut');
                curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
                curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                    'Content-Type: application/json',
                     "Authorization: Bearer $token"
                        )
                );
               echo $result = curl_exec($ch);

{ "error": { "code": "20005", "message": "Duplicate transaction reference" } } 我总是得到像 20005..

这样的错误

该错误意味着您已经使用此'merchantRefId'创建了一个交易。

'merchantRefId' 字段应包含您进行的每笔交易的唯一值。

"merchantRefId": "26434256"

只需将其更改为另一个随机值