Issue: GL shows AP transactions that is not in AP Aging Report

[Ming Trombetta]

We do reconciliation between GL and AP Aging Report each month. There are some carryover reconciliation items that won't come off. The most recent one is a Credit posted in GL AP account that is not on AP Aging report. AP double checked on their end. There are some AP transactions posted and then voided, back and forth, but in the end, everything was voided or paid on the AP side, while there is one credit left in GL which AP doesn't know where it came from.

Any ideas what could have caused this?

Thanks!