GR Based IV

Hi Knowledge ,

While doing PO , user as not checked the GR Bsd IV  indicator under item details ,

GR as done for this PO .

GR Bsd Iv is  non-editable now /after GR .

How to check this indicator in PO, without reversing the GR - Cancelling PO - Table level.

How to clear this kind of document in sap

Thanks

Murali.V