How to make a transaction call to update a child form (subform) which depends on the update of its parent form? For example: For service PO, when users change the QTY from 2 to 1 on PO20.1, and service code from Q (quantity and cost) to A ( Amount). The PO20.1 will jump to PO20.3 and ask you to change the “Exclude from AOC’ from N to Y. In the process flow, we can change the QTY and Service code on PO20.1 but don’t know how to make an update on its childform which is PO20.3 as well? This PO was unable to update sucessfully if we didn't update the field on PO20.3. Any help will be much appreciated. Thanks!