How to Import Supplier BOM in supplier portal

Hello Experts,

there is a supplier user in which he is trying to create product structures using import maps exposed to supplier by product data steward

however he is able to create supplier items but not supplier product structures attached the import map and raw file(sup_bom.txt) and uploaded file(bom.txt)

only the structure header is getting created and not the components to it

items are in Active and Production

I am looking for correct import map mapping to import product structures in supplier portal

Thank you

Manohar