unsupported_grant_type

Grant type not supported by the server., source: Hydra (RFC 6749)

`unsupported_grant_type`

Source: Hydra (RFC 6749)

HTTP: 400

Grant type not supported by the server.

Most often: trying to use password grant (removed in Olympus per OAuth 2.1).

Use Authorization Code instead.

Generated from the platform's error catalog. To find emit sites: grep -r "unsupported_grant_type" ../<repo>/src.

unauthorized_client

Client not authorized to use this grant type., source: Hydra (RFC 6749)

invalid_scope

Requested scope is invalid or unknown., source: Hydra (RFC 6749)