Stop to create GRN of Partially closed PO's

We are facing problem which I am going to explain below.

Purchase Order :100 Qty

GRN from MIGO : 50 Qty ( we use MIGO for PO GRN)

After this transaction, we dont need other 50 Qty so we by force close the PO by check mark the Deivery Complete flag in Delivery Tab of Purchase Order Item Detail (ME23N)

After the above steps when anyone try to create GRN from MIGO TCODE for other 50 Qty ,system allow to create GRN which is not correct because we already closed Purchase Order as I describe above.

My question is How can we stop to create GRN of Partially closed PO's.