knowledge_upload_corrupt
The bytes are not a readable document of the declared format (invalid base64, a broken archive, non-UTF-8 text, a mislabelled file). errors[] names the file.
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/knowledge_upload_corrupt",
"title": "…",
"status": 422,
"detail": "…",
"instance": "/v1/…"
}