Lot Missing in Item ledger

 Hi,

Some of the item transfer documents doesn’t assign the lot numbers in item ledger (f4111). We are not following the lot control in inventory now. System is updating as per FIFO. The Warehouse may be picking deferent lots.
Also in goods returs, the correct lot is not following.
In this scenario, how to resolve this. The same time we cannot skip the lot control, since we deal with pharmaceutical product need to follow the lots and expiry dates.

Thanks