> For the complete documentation index, see [llms.txt](https://help.auxalia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.auxalia.com/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/refresh-tree-pid.md).

# Refresh Tree (P\&ID)

This chapter describes how and why you want to refresh the Structure Tree.

Although the Structure Tree is typically up-to-date, it is sometimes necessary to update the tree. This can happen, if something changes in 3D to an object which is linked to its P\&ID counterpart. For example when changing the Tag in 3D of a valve.

In such cases you just click on the **Refresh** button to refresh your tree.

![](https://2994090777-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZH2AGHzvPfBW7YdaaGc0%2Fuploads%2Fgit-blob-04ad878c1bf3d9d0832f79309d1107e7d8cfd6f0%2FUse-Cases-0200.png?alt=media)