The default.

The agent has no default.

Missing or invalid token. The older error shape. On the agent management endpoints a 413 BODY_TOO_LARGE is decided before the token is checked.

AGENT_NOT_FOUND: no agent with that id or name(extension).

A conflict with stored configuration, a seat limit, an ambiguous identifier, or a caller ID the agent may not use. Nothing was saved.

BODY_TOO_LARGE: the request's Content-Length header is over 10 MiB, so it was refused before the body was parsed or the token checked. A chunked body without a Content-Length is not counted. May lack the Link header.