Unable to create PO line By New PO Suggession

Facing an issue with creating New Po Lines through New PO suggession entry. .After Searching / selecting required suggesions, the lines are not appearing in PO suggession screen.
I have tried all the the basic authorisation for the buyers. Each buyer has ‘system manager’ as a authorized user and there is 1 ‘system default’ buyer also.

What is the reason, so i cant fetch those lines ?

Thanks in advance.

  1. selected lines

2.lines appeared in PO suggession scrren.