# Validation tab

`File | Project Structure | Artifacts | <artifact> | Validation`

Use this tab to define server-specific validators that perform real-time validation of applications.

It is available only for artifacts that can be deployed to a server, and not available for artifacts of the types Jar and Other.

|  Application Server-specific validators | The list of current application server validation extensions to apply. |
| ![the Add button](https://resources.jetbrains.com.cn/help/img/idea/2026.2/app.expui.general.add.svg) Add | Select the class that implements the relevant validator. |
| ![the Remove button](https://resources.jetbrains.com.cn/help/img/idea/2026.2/app.expui.general.remove.svg) Remove | Remove the selected entry from the list. |