Clearing DFF value when position is changed in a transaction

Summary:

We have a table-validated DFF that is derived based on a combination of department and location. This DFF is expected to clear out when a position is changed. During a change assignment transaction, there are values in the DFF field by default. When we change the position, a pop-up allows us to select Yes or No to apply position changes. The value in a DFF in the assignment section is cleared and the LOVs are updated when Yes is clicked. When 'No' is clicked, it does not clear out, the default value is retained, and the LOVs do not update,