Hi All,
Recently faced an issue from Business. Details mentioned below:
GRN of one PO with line item 4 with Qty.420 had been done on 4th Jul 2016 and reversed on 15th Jul 2016 in Maximo (another EAM Software). As the PO was in unreleased status on 4th Jul 2016 in SAP the GRN failed at IDOC (refer attachment:PO not released screenshot) and GRN did not reflect in SAP. But the reversed GRN successfully passed IDOC and is reflecting in SAP which should not be passed as the GRN did not take place in SAP and also as 101 movement type did not not happen so 102 movement should fail .

I searched a lot on this but still could not figure out. Also SAP PI guy checking on it but no clue till date.
Please help.