workspace_recording_state_invalid
The recording is not in a state that allows the action (state names it): already started, not running, not paused, already stopped, or the call ended.
Problem shape
Every non-2xx response is an RFC 9457 application/problem+json body. The type URI below is stable and machine-matchable, so branch on the final path segment (the code) and treat the status as redundant confirmation. See the error-handling guide.
{
"type": "https://docs.vocapable.com/errors/workspace_recording_state_invalid",
"title": "…",
"status": 409,
"detail": "…",
"instance": "/v1/…"
}