On the Purchase requisition is it possible to make field "Project Number" conditionally mandatory?

Summary:

On the Purchase requisition is it possible to make field "Project Number" conditionally mandatory on basis of line type/Category/DFF values(any of these, preferable line type) , if yes, what are the setups required to be done?

As per various documents on this issue, we have been able to "Edit Properties" for Project number field in sandbox but unable to write an EL expression to make "Project number" required conditionally

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

24A

Code Snippet (add any code snippets that support your topic, if applicable):