Report: GR reversed after IR posted

Hi Guru, may I know any report that I can use to trace the transaction with GR reversed/PO deleted after MIRO/IR posted ? I know that MB51 is the report to show GR reversed, but how do I cross check this with IR posted to make sure all the transaction being perform by invoice processors is compliance.

As I know that we are not suppose to reverse any GR or delete the PO after IR posted/paid. Please advise.

Thanks.