invalid_api_credentials

HTTP 422. The exchange API key/secret supplied for an end-user were rejected by the exchange.

What to do: Re-check the end-user’s api_key, api_secret (and api_passphrase where the exchange requires one), and that the key has trading permission.

Every error is an RFC 9457 problem document - match on code (stable forever), show detail to humans, and quote instance when reporting an occurrence to support.