Below is a table describing various authentication error messages the web service may return.
|Error: Invalid token||This may be returned if you are attempting to use an API Key
without proper creation of an eSign client administrative account or, if your token has been revoked.
|Error: Invalid API key||This may be returned if you are using an API key
that is not associated with an account in the Constellation1 eSign system.
|Error: Invalid user account information||This may be returned if you are attempting to obtain a token
with invalid user credentials or there was a problem decrypting