1.1 Estimate how many barcodes you need
The most important thing to understand is that each variation of each product you sell requires a unique barcode.
For example, if you make a t-shirt, but that shirt comes in four sizes (small, medium, large, extra large), and four colors (blue, pink, purple, red), you need to identify 16 product variations (4 sizes x 4 colors = 16). If they also come in 4 packages, you'll need 64 barcodes (4 sizes x 4 colors x 4 packages = 64).
Need more help in figuring out how many barcodes you need?