400Bad Request (for example, an entity is disabled or the operation is unsupported)401Unauthorized (invalid or missing token)403Forbidden (invalid credentials or insufficient access)404Not Found409Conflict (data not ready yet or duplicate state)500Server error
Entity not configured to sync
A message such asThis credential is configured to not sync Notes. means that data type must be enabled on the credential used in the request. It is distinct from invalid authentication, an unsupported connector operation, or a sync that is still running.
Follow Fix an entity that is not configured to sync. Read errorMessage when handling these failures; waiting alone will not enable the entity.