PLU / SKU
PLU/SKU can be used by many different customers. It can be at the restaurant where all dishes are numbered in your menu or at the local grocery store where all fruit and vegetables have a PLU number. Maybe you notice your clothes have a product code besides the EAN code that you want to add to the article card.
In the app you just
When you add/edit an article is there a field call SKU where you fill in the PLU/SKU number for the article. You also need to add the PLU button to your Layout/startpage.