How to make subinventory as mandatory for Inventory Items only in Purchase order main Page

Summary: Our client have the requirement of creating direct PO without purchase requisition and they are creating Inventory Receipts from SSP Receipt and so we need to make the SUB INV as mandatory for only the Inventory Items in the Purchase Order.

We are able to achieve this in the PO Line (More Details) using Page personalization and also using condition of

#{bindings.DestinationTypeCode.attributeValue == 'INVENTORY'}, but this condition does not work in the PO Main page.

Otherwise for not entering the SUB INV at the line (More details), system should throw the error message similar to Account Distributions are missing Eg. Charge A/C, Variance A/C.