addCredential status codes

You may encounter the following status codes when you apply the
addCredential
API.
0000: Success. 6001: Invalid account. 6003: User doesn't exist. 6004: Credential ID is not valid. 6005: Internal error. 6006: Invalid credential type. 600B: Schema validation failed. 6011: Maximum enabled bindings limit reached. Unbind or disable a binding before retrying. 6012: Maximum allowed bindings limit reached. Unbind an existing binding before retrying. 6025: Multi-user credentials are disabled for this account. The given credential is already bound and enabled under a different user.