Save purchase order number from receipts as reconciliation reference in GL

Hi community,

I need to populate the purchase order number in the reconciliation reference field in order to use it to reconcile the accrual account. I already found the solution to get this information for the Payables Accrual Invoices creating a custom Journal Line Type:

What we need now is to have the same information (PO Number) for the Jounal entries generated by the receipts. I did not find the purchase order number available to populate the reconciliation reference in the OPM - Receiving JEs. Is it possible to add this information as a Custom source or as a supporting reference?