Snapchat's catalog crawler tried to load your product URL and received a 404, 5xx, or redirect loop. Products with broken links are removed from distribution until the URL works.
Common causes: products were deleted on the source site without removing them from the feed, URLs migrated when the CMS changed, country-restricted URLs blocked Snapchat's crawler IP, or staging URLs accidentally shipped to production. Snapchat treats link health as a strict quality signal.