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This page is the resolution target of the RFC 9457 type URI on every subject_not_found problem body: https://docs.get-exo.com/errors/subject_not_found. HTTP status: 404 Not Found.

Why it happens

This is the purge family’s answer for a subjectId that names nothing. Unlike subject_not_provisioned, which comes from the subject seam and concerns the selector header, this concerns a subject named as the object of the call.

How to fix it

  • List provisioned subjects with GET /v1/subjects and use an id from there.
  • If the subject was already erased, there is nothing left to purge and no action is needed.