Does a SKU have to be all numbers or can it be letters too?

[kissmyice]

Does a SKU have to be all numbers or can it be letters too

[kissmyice]

I need to print out SKU to place on items. How do I do this? 

[Chad]

Hello @kissmyice! 

Currently this feature is only available on Square for Retail. 

You can check out the steps in Create and Print Bar Code Labels with Square for Retail.