Does anyone know why POST /api/v2/conversations/messaging/participants returns a 409 Conflict when trying to send a proactive message to a guest who had a session 24 hours ago? The conversation status is ‘closed’ and the participant ID is valid.
Retrieve conversation ID via /api/v2/conversations/messaging/search using the guestId.
Extract the participant ID from the response payload.
Send POST request with JSON body: { “text”: { “content”: “Hello” } }.
The API rejects it immediately. I need to push a notification without reopening the conversation. Is there a specific flag or different endpoint for this?
My usual workaround is to checking the allowRecontact flag on the guest object before attempting the post. if that flag is false, the api rejects the message to respect privacy settings, so you need to update the guest profile via PUT /api/v2/communications/guests/{guestId} to set it to true first.
Make sure you handle the retry logic and rate limiting explicitly because the allowRecontact flag is just one layer of the problem; you also need to ensure the conversation state allows re-engagement without triggering a new session ID conflict. I recommend automating this check in Python using the genesyscloud SDK to fetch the guest profile, verify the allowRecontact boolean, and conditionally update it before proceeding with the message send. This avoids manual API calls and integrates cleanly into CI/CD or batch processing scripts. Here is a robust pattern: first, retrieve the guest details using platformClient.GuestApi().get_communication_guest(guest_id). If guest.allow_recontact is False, execute platformClient.GuestApi().update_communication_guest(guest_id, Guest(allow_recontact=True)) with a small exponential backoff retry loop to handle potential 429 Too Many Requests errors. Then, proceed with the participant message send. This approach ensures compliance with privacy settings while maintaining automation efficiency. Additionally, wrap the entire sequence in a try-except block to catch PureCloudException for specific error codes like 409 or 422, logging the guest ID and timestamp for debugging. This method has proven reliable in our bulk outreach workflows, reducing failure rates by handling state conflicts proactively rather than reactively. Always validate the guest ID existence before updating to prevent unnecessary API calls.
It’s worth reviewing at the conversation status before sending. If it’s ‘closed’, the API will reject your message with a 409. You need to either reopen the conversation or create a new one.
This is a common gotcha when dealing with guest re-engagement. Make sure you’re handling the conversation lifecycle correctly in your integration.