How a "safe" shipping change silently disapproved 621 products in Google Merchant Center
I run a small Shopify store. One afternoon I split my shipping policy in two — separate rules for domestic vs. international, nothing exotic — and by the next morning 621 of 739 active products had been disapproved in Google Merchant Center. A 21% drop became an 84% drop overnight, and the actual error Google returned was missing_shipping, which made no sense: the products had shipping info, I'd just moved it. This is the write-up of what actually went wrong and how I built a small diagnostic to
