Transport Order

[Trevorm]

Hi
Can someone please help?
We created an STO with a delivery, post goods issue to the delivery and then the goods receipt.
all the items where received except for one even though the stock is in the stock in transit area.
I logged an oss with SAP and they said it was a return order movement 161 with a value then a 162 with no value.
How is this possible?
The user reversed the 162 with a 161 and we could do the goods receipt for the stock transport order.
We now have an issue we can reverse the 161 movement even though there is stock in transit MB5T for the return order.

Thanks

Trevor