We’ve been hammering the /api/v2/conversations/messaging endpoint to build out a message threader in Spring Boot. The CXone documentation explicitly states: “Thread payloads must include a parentMessageId directive alongside the sequenceMatrix array to maintain dialogue continuity.” It’s structured exactly like that, but the messaging engine keeps rejecting it with a 400 Bad Request. Here’s the payload we’re sending via the Java SDK:
{
"conversationId": "conv_8492a1",
"parentMessageId": "msg_parent_772",
"sequenceMatrix": [1, 2, 3],
"branchDepth": 2,
"reorderTrigger": true
}
The response just says invalid_thread_structure and points straight to the sequenceMatrix field. We’ve validated it against the schema in Postman and it passes fine. The docs also mention: “Automatic reorder triggers will realign fragmented chats when timestamp ordering matches the parent linkage directive.” We’ve added strict timestamp checks in the request headers and disabled orphan detection pipelines locally, but the 400 persists. Connection pooling isn’t the issue since we’re using a fixed HttpClientBuilder setup.
Is the sequenceMatrix field actually deprecated in the current API version? The sandbox environment keeps throwing the same validation error even when we strip the branchDepth parameter down to zero. We’ve attached the full stack trace below. The webhook callbacks to our ticketing system are timing out because the threading validation logic never completes. Any idea why the atomic POST operation fails format verification on the second iteration?
2024-11-14T09:12:41.203Z ERROR c.g.c.platform.api.client.ApiClient - 400 Bad Request: {"errors":[{"code":"invalid_thread_structure","message":"Sequence matrix violates maximum branch depth limit","path":"/payload/sequenceMatrix"}]}
java.net.http.HttpTimeoutException: Request timed out after 30000ms
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:559)
The audit logs show zero linkage accuracy rates. Threading latency is spiking past 400ms.