Bad Request

authentication_failed, missing_authorization_header, unsupported_auth_method or jwt_signature_invalid when the credential is missing, malformed or rejected; accountid_identity_required when a superuser or service-to-service caller sends the Account-ID header

workflow_not_found, the workflow is not found in this account and mode

workflow_has_active_triggers, or workflow_already_deleted when it was already deleted

Internal Server Error

accountid_relationship_lookup_failed or accountid_account_lookup_failed when accounts-api does not answer

upstream_unavailable when core-api does not answer

service_timeout when the handler exceeds its deadline