> For the complete documentation index, see [llms.txt](https://manual.blocworx.com/blocworx-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.blocworx.com/blocworx-documentation/bloc-editor/managing-a-field/field-rules/can-not-be-empty.md).

# Can not be empty

This is the most basic rule in Blocworx. It simply demands that the field is not empty. 

![](/files/-Ma4HEumgEO79ebE2jsu)

### Rule Parameters

This rule does not have any rule parameters.