Cannot find the PO to create an ASN

Hi,

I created and approved a Purchase order with expense line types

Then I logged in as the supplier user in iSupplier portal and I can see the purchase order being available. I can even create an invoice against the purchase order.

But the issue is that I cannot create an ASN against this purchase order because I cannot find the purchase order in the create ASN form.

I checked the setups as per the note Doc ID 260672.1 but they all look fine.

I also made sure the need by date is not in the future as per the note (Note ID 1322060.1).