hey everyone! I've got a requirement on an elbrus site to prevent certain items from being added to the cart based on the shipping addresses for the customer. I've added an item field (multi select) with a list of restricted states for these certain items. My idea, as this is needed very asap, was to just check that list against the shipping address of the customer in their profile model when they click 'add to cart' and if there was a match, prevent it the item from being added, and display a message in a modal. But after beginning work on this, most customers have multiple shipping addresses in different states, and which address they're using won't be set until checkout. We're B2B and customers frequently have 100+ items in their cart, and I don't want to loop through them all at checkout and check for these restricted items. So, any ideas how to handle this more server side or just any ideas at all if you've experienced this? I'm thinking about a solution but am on a bit of a time crunch and thought I'd run it by here! Thanks in advance!!