So I have a shop where I sell in-stock items but I also sell preorder items. Preorder listings are for items that have yet to be produced so they take time to make. I was wondering if there is a way to stop a customer from ordering an in-stock item and a preorder item together? I basically just don’t want people to combine in-stock items and preorder items into one order, if they want an in-stock item and a preorder item, I want them to order them separately. (I hope this wasn’t too confusing.)
Welcome to the Shopify community, This is certainly possible through code customization, we need to do cart customization to check and stop users from proceeding further.
You may want to hire a Shopify expert or message me directly.