Assigning serial numbers to orders during shipping
If Force Serial/Lot Input in SA Administrator Options-Documents-Sales Orders-Entry Settings is selected, you must specify serial numbers in Sales Order Entry. If serial numbers are not assigned in Sales Order Entry, the product is picked without regard to serial numbers. You must then assign the serial numbers during shipping before the order can be invoice processed.
The Serial Number Entry field in SA Administrator Options-Documents-Sales Orders-Entry Settings determines how you select serial numbers.