Passive Mode Error Codes
| Return Code | Description |
| SSO_WSFED_BAD_REQUEST | Invalid request parameters |
| SSO_WSFED_IDP_SETTING_ERROR | WS-Fed service misconfigured |
| SSO_WSFED_SP_SETTING_ERROR | WS-Fed application misconfigured |
Active Mode Error Codes
| Return Code | Description |
| InvalidValueForElement | Invalid Action element |
| TimeInvalid | Time validation failed |
| UnableToAuthenticate | Invalid authentication information |
| MissingElement | Required element missing |
| UnsupportedRequestType | Invalid RequestType element |
| UnsupportedKeyType | Invalid KeyType element |
| FailedAuthentication | Authentication failed |