RE: AP Invoice in HISTORY but not apply to any credit note or payment.
Wong Henry,
Surely, this invoice was fully applied to some document. Because the date field DINVPDOF(the date an invoice was fully applied) from the below query is 2014-02-27.
select DINVPDOF, *From PM30200 where VCHRNMBR='SINV0029040' and DOCTYPE='1'
After fully applied this invoice, this document went to history. But the related applied details for this invoice is not available in GP(both open and history).
Cause: May be the applied details for this invoice was deleted from back end.
For this scenario: Bringing invoice from history to open is not a advisable solution. Because the invoice already applied and distribution for this accounts was affected. Better check with the vendor for the invoice and get the details about the same.
Note: No option available for bringing back invoice from hist to open.