Items like vouchers may have no GTIN at all. Previously, the placeholder product was only created when there were missing GTINs, causing a NOT NULL constraint violation for items with gtin=None. Now we also check for items without GTIN and create a placeholder for them. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>