Hello Liam,There are cases where even the store owners will not know a user's identifier from our user system ahead of time.  Consider when a customer exists in the Shopify store but not in our system, because they have not logged in before.  Take th...

Hello,I've seen this question raised here, but I wanted to add some context to it.  Why can't we update line item properties (aka customAttributes) in the Shopify Admin UI or using the Admin API (Graphql or REST)?  The reason I think this is necessar...