Understanding UPC Codes in S2k
It is very important that the SKU or UPC codes are correctly entered into S2k. If you enter the wrong number into S2k and then send it to the POS and if that number is wrong, it will NOT scan. S2 does not require the first zero nor the last number as shown below. Here is a brief exercise on the different types of numbers you will see on products and how you must enter them into S2k:
UPC Training Module