| RTCEngineErrorOK | 0 | No error |
| System errors | | |
| RTCEngineErrorSystemError | 100001 | Internal system error |
| RTCEngineErrorNotInitialized | 100002 | Not initialized |
| RTCEngineErrorMediaNotInitialized | 100003 | The media module isn’t initialized yet |
| RTCEngineErrorProtocolParsingError | 100004 | Protocol parsing error |
| Common errors | | |
| RTCEngineErrorTimeout | 100005 | Timed out |
| RTCEngineErrorInvalidArgs | 100006 | Invalid arguments |
| RTCEngineErrorConflict | 100007 | Conflict from a repeated operation |
| RTCEngineErrorSdkTokenInvalid | 100008 | The SDK token is invalid |
| Network errors | | |
| RTCEngineErrorNetError | 100009 | Network error |
| RTCEngineErrorMediaNetError | 100010 | Media network error |
| RTCEngineErrorNotFound | 100011 | Target doesn’t exist |
| Client errors | | |
| RTCEngineErrorDeviceNoAuthorized | 103001 | No permission to access the device |
| RTCEngineErrorNotJoinedChannel | 103002 | Not in the channel |
| RTCEngineErrorForbidden | 103003 | Operation not allowed |
| RTCEngineErrorStreamNotFound | 103004 | Stream doesn’t exist |
