Error types

Error responses follow RFC 7807 (problem+json). The type field is a stable identifier; match on it.

Type	Status	Meaning
invalid-subject	400	Subject is not of the form namespace:external_id.
invalid-object	400	Object is not of the form namespace:external_id.
invalid-relation	400	Relation is not one of owner, editor, viewer, member.
bulk-too-large	400	More than 100 checks in a single bulk request.
namespace-not-found	404	Referenced namespace does not exist in the tenant.
grant-not-found	404	DELETE targeted a grant that does not exist.
unauthorized	401	Missing or invalid bearer token.
forbidden	403	Valid token, insufficient scope.
rate-limited	429	Per-tenant rate limit exceeded. Retry after Retry-After.
internal	500	Server-side failure. Include X-Pore-Request-Id in any support ticket.