The PO Qty=60
Received =60
Invoice Qty =0
I used 23 so the remaining = 37

I want to cancel 20 qty, I only need to receive 40
So I tried to undo the receipt but system raise Error.
Remaining Quantity must be equal to '60' in Item Ledger Entry: Entry No.=293290. Current value is '37'.

Could you please consult what good way to return 20