Mapping the products you have listed on Sellar to their counterparts in Breww keeps stock levels synced. It also ensures products can be correctly identified when they appear as line items on orders that get pushed from Sellar and pulled in to Breww.
If you don’t see the products you have created in Sellar, click “refresh products from Sellar”
You’ll then see a dropdown menu from which you can select the appropriate product from your list in Breww.