New required fields added in schema conversations.v2.start_conversation_request: [participants action]

What changed

New required fields added in schema conversations.v2.start_conversation_request: [participants action] Affected surface: schema conversations.v2.start_conversation_request. Root cause: schema `conversations.v2.start_conversation_request`. Detected at Fri, 28 Aug 2026 15:12:15 UTC UTC.

Diff

{
  "added_required": [
    "participants",
    "action"
  ],
  "path": "schema conversations.v2.start_conversation_request",
  "schema_path": "schema conversations.v2.start_conversation_request"
}

Likely impact

Existing integrations relying on this surface will fail or behave incorrectly. Treat this as a release-blocker until the recommended action below is applied.

Recommended action

Add the new required field to all request payloads or arguments. Requests omitting it will be rejected.