Hello Support, I am making a call to the with the body structure below:

{
  "assistantId": "3b026749-xxxx-4xxx-b3c7-8296d8xxxxxx",
  "assistantOverrides": {
    "variableValues": {
      "ContactName": "Joe Bloggs",
      "ContactPhoneNumber": "17865nnnnnn",
      "Notes": "Testing 1 2 3 ... Hey Joe, blah blah blah"
    }
  },
  "customer": {
    "number": "+17875nnnnnn",
    "numberE164CheckEnabled": false
  },
  "phoneNumberId": "c4419a60-xxxx-4xxx-8c8d-8222b2xxxxxx"
}

{
  "message": [
    "id must be a UUID"
  ],
  "error": "Bad Request",
  "statusCode": 400
}

I have checked the UUIDs in a UUID validator and they are reflected as valid as V4 i.e. 32 hexadecimal characters, displayed in 5 groups separated by hyphens (8-4-4-4-12) Regards, Paul