Hello,

I am trying to create several accounts in a mailing list using the /transactioncontacts endpoint.

The call is failing with the following error message: 

\"errorMessage\":\"Cannot omit the contacts key in the request body\",\"errorCode\":\"TAP_0.9\"}

I am pushing the request from internal Qualtrics API task. Please find the Payload : 

{
  "transactionMeta": {
    "batchId": "BT_2CTiAeTkNxD5Ra7",
    "fields": [
      ""
    ]
  },
  "contacts": [
    {
      "email": "96485f9866900383daa1d67225215f237c42458d@test.com",
      "embeddedData": {
        "Channel": "email",
        "ProfileID": "96485f9866900383daa1d67225215f237c42458d",
        "SurveyType": "Relationship",
        "Tenant": "TestTenant",
        "UniqueID": "658ca7cf2fb6992df5685e9a2e900a057dde1d8e7a508d794a55d484a784fef0999426c6f5fc9f7293b289b1da679413422f7d184abacd7b6124f3f662a92ab3"
      },
      "extRef": "96485f9866900383daa1d67225215f237c42458d",
      "firstName": "firstname",
      "language": "DE",
      "lastName": "lastname",
      "phone": "",
      "privateEmbeddedData": {},
      "transactionData": {
        "": ""
      },
      "unsubscribed": false
    },
    {
      "email": "a5319b2720e20b61da3be44b05f4812361f787d0@test.com",
      "embeddedData": {
        "Channel": "email",
        "ProfileID": "a5319b2720e20b61da3be44b05f4812361f787d0",
        "SurveyType": "Relationship",
        "Tenant": "TestTenant",
        "UniqueID": "3a280adb309b899a34cba3277239c4a3942c21af4b05713b2467d327666a7e32f4da2aa70ac0348edee3ab392c9b22995659d69e72e696264a693ff7e87852ef"
      },
      "extRef": "a5319b2720e20b61da3be44b05f4812361f787d0",
      "firstName": "firstname",
      "language": "DE",
      "lastName": "lastname",
      "phone": "",
      "privateEmbeddedData": {},
      "transactionData": {
        "": ""
      },
      "unsubscribed": false
    }
  ]
}