First, this is using evo 2007.1 build 3/15/07 with AP-B (10/27/06)
(as a note the right and wrong vendor are the same company but different cost centers, so the vendor codes were only a character or two different - this is why it took so long to catch the error)
 
We have a PO that was entered using the wrong vendor code.
The PO was received with this wrong vendor.
The invoice was then reconciled with the wrong vendor.
It now shows up to be paid to the wrong vendor under AP-E just as it should.
 
The AP person meanwhile got the invoice from the correct vendor and not seeing it in the aging; added it as a voucher for the correct vendor and cut a check.
 
Any suggestions on the best way resolve this?
 
I tried to go to PO-N and put in the invoice number.
I get the option to reverse it - but then get the message that I can't because it was created as a voucher - need to use AP-B. I checked the journals and this thing has a RNI/Invoiced description with entries the in the AP and suspense payable.  Doesn't seem like it went through AP-B.  It doesn't show up using F2 under AP-B either.
 
So - next idea - void the voucher check that was sent to the correct vendor and just pay the PO invoice using the same check number and go on down the road.  But, AP-B says it is "partially paid" and I can't change or reverse it. I've double checked that I'm not confusing the vendor codes in chasing this.  
 
Both of these entries are using the same invoice number but it doesn't seem like that should be part of the problem since vendor codes are different.
 
Any other ideas on cleaning this up would be welcome.  Maybe I've just passed up the easy way.
 
Ken Hays