Programmatic Web Messaging session termination via backend API failing with 405

NICE CXone API & Integrations
1

I’m completely stumped as to why the backend service is unable to terminate an active web messaging conversation programmatically. We are building a supervisor dashboard that requires forced session closure, but standard REST endpoints seem to reject the request.

The documentation explicitly states: “To end a conversation, send a DELETE request to /api/v2/conversations/webmessaging/{conversationId}.”

My code snippet using the Python SDK is as follows:

response = conversation_api.delete_conversation_webmessaging(conversation_id)

This consistently returns a 405 Method Not Allowed error. I have verified that the access token has the conversation:view and conversation:write scopes. I also attempted a raw HTTP DELETE request using requests.delete, which yielded the same result. Is there a specific header required, or is the endpoint path different for backend-initiated closures compared to client-side SDK calls? I need to ensure the guest is notified of the disconnection, but I cannot proceed without successfully closing the session from the server side.

2

Check your HTTP method and endpoint structure. The 405 Method Not Allowed error usually means the server understands the request method but the resource does not support it. For Genesys Cloud, you cannot simply DELETE the conversation resource itself to end it. You must terminate the participants.

The correct approach is to send a POST request to the conversation termination endpoint. This action removes all participants, effectively ending the session.

Here is the corrected Python SDK implementation:

from purecloudplatformclientv2 import ConversationsApi, TerminateConversationRequest

# Initialize API client (assume platformClient is already authenticated)
conversations_api = ConversationsApi(platform_client=platform_client)

# Define the termination request
# Note: You must specify which participants to terminate. 
# To end the whole conversation, list all participant IDs.
request_body = TerminateConversationRequest(
 participants=[
 "participant_id_1", 
 "participant_id_2"
 ],
 reason="Supervisor forced end"
)

try:
 # POST /api/v2/conversations/webmessaging/{conversationId}/terminate
 response = conversations_api.post_conversations_webmessaging_conversationid_terminate(
 conversation_id="your_conversation_id",
 body=request_body
 )
 print(f"Conversation terminated successfully: {response}")
except Exception as e:
 print(f"Error terminating conversation: {e}")
  1. Retrieve Participant IDs: First, GET /api/v2/conversations/{conversationId} to get the list of active participants.
  2. Construct Payload: Create a TerminateConversationRequest with the participant IDs.
  3. Execute POST: Call post_conversations_webmessaging_conversationid_terminate.

Refer to the Conversations API Documentation for the exact schema. Using DELETE on the parent resource is reserved for archiving or deleting historical records, not for active session management.