voice_audition_text_too_long
Admin console: the audition text exceeded the 400-character ceiling. That bound is the abuse control a mutating route would have inherited from its reason string, and it bounds how much GPU work one console click commissions while live calls share the same synth pool.
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/voice_audition_text_too_long",
"title": "…",
"status": 422,
"detail": "…",
"instance": "/v1/…"
}