# 2.5.1 Error Type

Troubles in the robot system are divided into errors and warnings.

* Error: It is trouble serious enough to stop the robot operation, and the code number in the notification message starts with E.

![](https://3582473718-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MjGR3_MuSysJbdhJ1BO%2F-Mk1k-QhWYfxkvT2qi-E%2F-Mk1kK6sVf636TIxGjs5%2Fimage.png?alt=media\&token=12856879-c200-4d23-ac60-5f6be278d2cf)

* Warning: The robot will continue to operate, but a warning is a trouble that requires you to check whether or not a response action has been taken. The code number in the notification message starts with W.

![](https://3582473718-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MjGR3_MuSysJbdhJ1BO%2F-Mk1k-QhWYfxkvT2qi-E%2F-Mk1kP1k3Sd1c-WUDe-T%2Fimage.png?alt=media\&token=1ff07b66-391f-4347-81c0-6cf0a8ab72ac)
