We are implementing a middleware service to synchronize customer attributes from an external CRM into Genesys Cloud voice conversations in real time. The requirement is to write specific key-value pairs to the participant’s attributes object while the call is active, rather than waiting for the conversation to end.
The logic seems straightforward. We retrieve the current participant state via GET, merge the new attributes, and send it back via PATCH. The HTTP request looks like this:
PATCH /api/v2/conversations/voice/conversations/{conversationId}/participants/{participantId}
Content-Type: application/json
Authorization: Bearer <token>
{
"attributes": {
"crmId": "987654321",
"loyaltyTier": "Gold",
"lastInteraction": "2023-10-27T14:30:00Z"
}
}
The response is consistently a 400 Bad Request. The error payload provides little detail, simply stating:
{
"message": "Bad Request",
"code": "bad.request"
}
We have verified that the OAuth token has the conversation:write scope. The conversation ID and participant ID are valid and copied directly from the successful GET response. We tried removing the lastInteraction field, thinking it might be a reserved key, but the error persists. We also attempted to include the full participant object in the PATCH body, including the state and address, but that resulted in a 409 Conflict, which suggests the server is rejecting partial updates or expecting specific fields.
The documentation for the Conversations API mentions that attributes can be updated, but it does not explicitly state whether the PATCH operation supports partial attribute objects or if the entire attributes map must be provided. Given the strict nature of the API, we suspect there might be a hidden requirement for the request body structure.
Has anyone successfully updated participant attributes during a live voice call using the REST API? Are we missing a required field in the JSON payload?