Hi
You need to make a development or create a import package with reservation line as Guy explains
the problem is
when you make a sale, you select an item in the sales line, IF the item has tracking, then is marke to look for a reservation entry line, if bc doesnt find the line, then asks the user to add the item tracking info (ie lot no) and this happends in another table different from the sales line, so, you need to:
create a sales order
add a sales line
manually add the lot info
then open the table reservation entry (view table) and copy that to excel

analyze the table data looking for the table 37 (sales line)
try to emulate that info in a second order using your package adding the table and the required data