PO Report without PR

Hello All,

Is there a standard SAP report that will list out all the PO line items that were created without reference to a PR?

We have tried ME2M, ME2L and ME5A. We have also tried using the "Scope of List = ALV" in each of the transactions stated, and yet the PR does not show as part of the list nor part of the "change layout" option.

Thanks in advance for your help!