| AuthFailure.InvalidAuthorization | CAM signature/authentication error. |
| FailedOperation.ActionCloseEye | No motions of eye closing are detected. |
| FailedOperation.ActionFaceClose | The face is too close to the screen. |
| FailedOperation.ActionFaceFar | The face is too far from the screen. |
| FailedOperation.ActionFaceLeft | The face is too far left from the screen. |
| FailedOperation.ActionFaceRight | The face is too far right from the screen. |
| FailedOperation.ActionFirstAction | No movement is detected. |
| FailedOperation.ActionLightDark | The lighting is too dim. |
| FailedOperation.ActionLightStrong | The lighting is too strong. |
| FailedOperation.ActionNodetectFace | Failed to detect a full face. |
| FailedOperation.ActionOpenMouth | No motions of mouth opening are detected. |
| FailedOperation.CompareFail | Comparison failed. |
| FailedOperation.CompareLowSimilarity | The comparison similarity did not reach the passing standard. |
| FailedOperation.CompareSystemError | Error calling the comparison engine API. |
| FailedOperation.DownLoadError | File download failed. |
| FailedOperation.DownLoadTimeoutError | File download timed out. |
| FailedOperation.LifePhotoDetectFaces | Multiple faces are detected. |
| FailedOperation.LifePhotoDetectFake | Real person comparison failed. |
| FailedOperation.LifePhotoDetectNoFaces | Failed to detect a full face. |
| FailedOperation.LifePhotoPoorQuality | The resolution of the image passed in is too low. Please upload a new one. |
| FailedOperation.LifePhotoSizeError | The image passed in is too large or too small. |
| FailedOperation.LipFaceIncomplete | The face is not fully exposed. |
| FailedOperation.LipMoveSmall | The lip movement range is too small. |
| FailedOperation.LipNetFailed | Failed to pull the video. Please try again. |
| FailedOperation.LipSizeError | The video is empty or its size is inappropriate. The recording duration should be about 6 seconds. |
| FailedOperation.LipVideoInvalid | The video format is incorrect. |
| FailedOperation.LipVideoQuaility | The video definition is too low. |
| FailedOperation.LipVoiceDetect | No sound is detected. |
| FailedOperation.LipVoiceLow | The volume of the video is too low. |
| FailedOperation.LipVoiceRecognize | Speech recognition failed. |
| FailedOperation.LivessBestFrameError | Face detection failed. Unable to extract the photo for comparison. |
| FailedOperation.LivessDetectFail | Liveness detection failed. |
| FailedOperation.LivessDetectFake | Suspected spoofed recording. |
| FailedOperation.LivessSystemError | Error calling the liveness engine API. |
| FailedOperation.LivessUnknownError | Video-based real person detection failed. |
| FailedOperation.SilentDetectFail | Real person detection failed. |
| FailedOperation.SilentEyeLiveFail | Eye detection failed. |
| FailedOperation.SilentFaceDetectFail | No face is detected in the video. |
| FailedOperation.SilentFaceQualityFail | Low face quality. |
| FailedOperation.SilentFaceWithMaskFail | A face mask is detected. |
| FailedOperation.SilentMouthLiveFail | Mouth detection failed. |
| FailedOperation.SilentMultiFaceFail | Multiple faces are detected in the video. |
| FailedOperation.SilentPictureLiveFail | The video might be spoofed. |
| FailedOperation.SilentThreshold | Real person detection did not reach the passing standard. |
| FailedOperation.UnKnown | Unknown internal error. |
| InvalidParameter | Invalid parameter. |
| InvalidParameterValue | Incorrect parameter value. |
| UnsupportedOperation | Unsupported operation. |