Min-Max Planning requisitions does not populate subinventory

Hi ,
User is running min-max planning report for few items.

Purchase Requisition is created successfully but the destination organization sub inventory is not populated for all lines.

For same items user is able to create purchase requisitions through iproc with sub inventory.

We found that min-max planning requisitions in po_requisitions_interface_all did not have any destination organization sub inventory

What could be the reason ?

Thanks