When we unship a package (usually to correct something to do with freight), the system creates 2 negative STK-CUS transactions instead of one. So we end up with extra inventory at the end that we have to remove from the system since it does not exist in real life.
Below is the Part Tran for one such transaction (re-ordered to read from top to bottom).
Things that occur to me (not sure if they are meaningful or not):
The first STK-STK transaction (move out Bin 1) has a negative Qty but a positive Trans Qty. Not sure why that is.
The unship happened a day later.
Anyone know what might cause this and how it might be prevented?