PATCH participant attributes timing issue in live voice

Trying to sync external status to Genesys during an active call. Calling PUT /api/v2/conversations/voice/{id}/participants/{id} with custom attributes. It returns 204 OK, but the values don’t appear in Architect or our webhook payload until the call ends. Using the genesys-cloud-purecloud-platform-client SDK. Is there a specific attribute prefix required for real-time propagation, or is this just a caching delay?

Hey there. That 204 OK is misleading. The API accepts the payload, but Genesys doesn’t push dynamic attribute changes to active conversation streams unless you explicitly request it or use a specific header. Standard PATCH/PUT operations on participants are often batched for persistence, not real-time eventing.

You need to add the X-Genesys-Override-Existing-Attributes header set to true if you’re overwriting, but more importantly, check your webhook subscription. It only fires on attribute changes if you subscribe to conversation.participant.update events with the includeAttributes flag enabled.

Here’s the curl fix:

curl -X PATCH "https://api.mypurecloud.com/api/v2/conversations/voice/{convId}/participants/{partId}" \
 -H "Authorization: Bearer <token>" \
 -H "Content-Type: application/json" \
 -H "X-Genesys-Override-Existing-Attributes: true" \
 -d '{"attributes": {"ext_status": "connected"}}'

If that still feels slow, consider using the Conversations API to inject a transcript event with metadata instead. It propagates faster to Architect conditions.