SLA Rule- How to default employee cost center on Payables Invoice miscellaneous line

We have a Business requirement to replace the current department segment (COA- segment2) with the employee cost center ( employee default expense account) for miscellaneous expense line on the Payables invoice originated from Internet expenses (T&E) which has Pcard purchases.

We do have a employee cost center or department already available on payables invoice "Item expense" line which we are trying to copy it to the miscellaneous line by writing a SLA rule but its not working. we have written a SLA rule using different sources as shown in the screenshot attached. Based on our research, It appears that there is not any oracle source field available which can be referenced to copy the department from "Item Expense" line to "Miscellaneous Expense" line.