| INVALID_ENGINE | 'INVALID_ENGINE' | The parameter passed to destroyEngine is not a valid engine object. |
| INVALID_PARAMS | 'INVALID_PARAMS' | General error code. The parameters passed when calling the method are invalid. Please refer to the method documentation for the correct parameters. |
| INVALID_TOKEN | 'INVALID_TOKEN' | The Token used when calling start to join the room has expired or is invalid. Please obtain a new Token and call start again to join the room. |
| JOIN_ROOM_FAILED | 'JOIN_ROOM_FAILED' | Failed to call start to join the room; see the specific error reason in the message. |
| REPEAT_JOIN | 'REPEAT_JOIN' | Repeatedly joining the room. Triggered when start is called again after already joining the room. |
| ROOM_FORBIDDEN | 'ROOM_FORBIDDEN' | Failed to call start to join the room because the room is forbidden. |
| USER_FORBIDDEN | 'USER_FORBIDDEN' | Failed to call start to join the room because the local user is forbidden. |
| DUPLICATE_LOGIN | 'DUPLICATE_LOGIN' | A user with the same user ID joined the room, causing the current user to be kicked out. Triggered via onErrorMessage callback. |
| RTM_DUPLICATE_LOGIN | 'RTM_DUPLICATE_LOGIN' | A user with the same user ID logged in, causing the locally logged-in user to be kicked out. Triggered via onErrorMessage callback. |
| RTM_TOKEN_ERROR | 'RTM_TOKEN_ERROR' | The Token used when reconnecting to the real-time signaling server is invalid. Triggered via onErrorMessage callback. Please use a new Token to log in again. |
| TOKEN_EXPIRED | 'TOKEN_EXPIRED' | The Token expired after joining the room. Triggered via onErrorMessage callback. Please obtain a new Token and call start to rejoin the room. |
| RECONNECT_FAILED | 'RECONNECT_FAILED' | The SDK failed to reconnect with the server and will not automatically retry. Triggered via onErrorMessage callback. You need to leave the room and rejoin, or contact technical support. |
| KICKED_OUT | 'KICKED_OUT' | The server called OpenAPI to kick the current user out of the room. Triggered via onErrorMessage callback. |
| ROOM_DISMISS | 'ROOM_DISMISS' | The server called OpenAPI to dissolve the room, causing all users to be removed from the room. Triggered via onErrorMessage callback. |