We are running a saved search that groups transactions that hit our Accrued Purchases account by Created From, which has the effect of grouping them by PO (since we always create a separate vendor bill for each PO) so we can see the total of the transactions affecting that account for each PO. In the vast majority of cases this gives us a list that we can compare to the list on the Post Vendor Bill Variances page, so we can confirm that the journal entry is needed.

The problem is that some POs that are shown to be out of balance in regard to Accrued Purchases by the saved search don't appear at all on the PVBV page.