Is there a way to require that a column must be updated if a certain column is updated in a list item? Something that could be done during the configuration of the list through a browser edit or SP designer.
so if i have a list with say columns A, B, C
the list item has been created with only A filled in.
Someone edits the list item by filling in B
i need to require that C contains data if B has data
I would recommend creating a PreSaveAction javascript function.
For more information, see how do I validate form fields in sharepoint list?.