> 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/plantexpresstools/how-to-use/change-log/usage/acquired-read-only.md).

# Acquired & Read-Only

### <mark style="color:blue;">Acquired & Read-Only properties</mark>

If you have an acquired property from a related class and this property is set as read-only in Project Setup, the history icon will appear grey. You can still view the history though, but you cannot restore a value.

![](/files/APyHlczMlyGu2wnGfh0j)