Purchase order created for the pr,status in pr shows not edited

Dear experts

PO was created with reference to PR for two line items under external services.

then service entry sheet was created for the line 1 item.

line item 2 in PR still shows not edited , when there is already PO raised for that item.

what criteria should be checked,how to make second line item edited in PO.

Thanks & Regards.

Erfan.