How do I correctly to structure the JSON payload when pushing historical digital message data to Genesys Cloud via the /api/v2/integrations/messages endpoint? The current implementation returns a 400 Bad Request with Invalid message type despite matching the OpenAPI spec for webchat.
{
"integrationId": "msg-webchat-prod",
"messageId": "msg-001",
"type": "webchat",
"direction": "inbound",
"timestamp": "2023-10-27T14:30:00Z",
"participants": [
{
"id": "user-123",
"name": "Agent A"
}
],
"body": "Hello support"
}
Environment: GC CLI v2023.10.0, Terraform provider v1.10.0. No specific error details in the response body, just generic validation failure.
The docs actually state that the type field in the /api/v2/integrations/messages endpoint is strictly validated against the integration definition registered in the Genesys Cloud org. If the integration ID msg-webchat-prod is not explicitly configured as a webchat type in the Genesys Cloud UI or via the Integrations API, the platform will reject the payload with a generic 400 error, even if the JSON structure appears correct.
This often happens when developers assume the type string in the payload overrides the integration’s inherent configuration. It does not. The integration must be pre-provisioned with the correct channel type. Furthermore, the timestamp field in your snippet is incomplete. Genesys Cloud requires ISO 8601 format with timezone offset (e.g., 2023-10-27T10:00:00Z). Missing the ‘Z’ or the time component can cause serialization failures on the server side, leading to the same 400 response.
When pushing historical data, especially for sync purposes with external ticketing systems like ServiceNow, it is also critical to ensure the messageId is unique within the integration context. If you are retrying failed pushes, reusing the same messageId will result in a 409 Conflict, but a malformed initial attempt will stick as 400.
Try adjusting the payload to include the full timestamp and verify the integration type in the Genesys Cloud admin console. A robust payload should look like this:
{
"integrationId": "msg-webchat-prod",
"messageId": "msg-001",
"type": "webchat",
"direction": "inbound",
"timestamp": "2023-10-27T14:30:00Z",
"from": {
"id": "user-external-id",
"name": "Customer Name"
},
"text": "Historical message content here"
}
Check the integration settings first. If the type mismatches, no amount of JSON tweaking will resolve the Invalid message type error. The system validates the integration’s capability before parsing the message body.
The easiest fix here is this is to ensure the integration definition explicitly declares the webchat channel type before pushing history.
Mismatched channel definitions cause the platform to reject payloads regardless of JSON validity. Check the integration settings in Admin to confirm the channel matches the payload type.