Field help (LOTSELSMV) 

Reference of the lot number to be processed.

Entering the lot is optional. When there is only one product for the specified lot number, you can directly enter the lot number to automatically populate the associated product code.
If there is not any specified lot, the inquiry impacts all the lots of the product/site selection.For products managed with optional lots, select the Blank lot check box to filter stock lines with an empty lot number.