How to setting AP line description for Journal entry description of Payment in Expense module

Summary:

Hi Oracle team, We are setting description rule for Expense payment's journal entry. We set description rule base on the seperate accounting classes. It seems that all payment has same accounting class, so for Expense payment's journal entry we set the same description rule with other invoice's payment. Result, other invoice payment's journal (payables accountline) description rule shows Line description but in Expense's payment journal (payables account line) it does not show Line description. the current source for Line description is "Purchase Order Inventory Item Description". We already try with other sources such as "Invoice Description", "Invoice Distribution Description", "Invoice