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'Parameter [OriginalMessageId] value is invalid' error when resending a fax through API

  • July 21, 2025
  • 1 reply
  • 152 views

  • Known Participant

I am getting an error `Parameter [OriginalMessageId] value is invalid.` when trying to send a re-send request through API. I’m using this documentation: https://developers.ringcentral.com/guide/messaging/fax/resending-faxes

Error details:

Response:
StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.HttpConnectionResponseContent, Headers:
{
Date: Mon, 21 Jul 2025 07:47:48 GMT
Connection: keep-alive
RCRequestId: -----
RoutingKey: -----
X-Rate-Limit-Group: heavy
X-Rate-Limit-Limit: 10
X-Rate-Limit-Remaining: 9
X-Rate-Limit-Window: 60
cf-cache-status: DYNAMIC
Server: cloudflare
CF-RAY: -----
Content-Type: application/json;charset=utf-8
Content-Length: 306
Content-Language: en-US
}
Content: {
"errorCode" : "InvalidParameter",
"message" : "Parameter [OriginalMessageId] value is invalid.",
"errors" : [ {
"errorCode" : "CMN-101",
"message" : "Parameter [OriginalMessageId] value is invalid.",
"parameterName" : "OriginalMessageId"
} ],
"parameterName" : "OriginalMessageId"
}

Request:
Method: POST, RequestUri: 'https://platform.ringcentral.com/restapi/v1.0/account/~/extension/-----/fax', Version: 1.1, Content: System.Net.Http.StringContent, Headers:
{
X-User-Agent: Demonstration App/0.0.1 RingCentral.Net/6.4.0
Authorization: -----
Request-Id: |-----.
traceparent: -----
Content-Type: application/json; charset=utf-8
Content-Length: 35
}
Content: {"OriginalMessageId":2399532187015}

 

1 reply

  • Author
  • Known Participant
  • July 21, 2025

Issue solved, it works with originalMessageId (without capital ‘O’). 

However, the error message is very confusing, as it was saying that VALUE for this property is incorrect, but it turned out that value was ok and the problem was with the property name.