Business rule to make field not edit in list editing

[VSN]

Hello everyone,

I have a requirement to make entered cost field in benefit plan table  not editable  in related list if parent project is in cancel state.. 

by using business rule only..

[Sandeep Rajput]

@VSN Ideally this should be handled via a list_edit ACL where in the condition field you can dot walk to the parent project field and check if the state is cancel.

[VSN]

i dont want to go with ACL's

..