How the Identifier Exists attribute Works

Recommended: Use "Activate when less than two" for most stores. This automatically handles both identified and non-identified products.

Custom-Made Products

• Handmade jewelry, crafts, art
• Made-to-order items
• Personalized products

Vintage and Antique Items

• Antique furniture
• Vintage clothing
• Collectibles

Books Before 1970

• Pre-ISBN era publications
• ISBN became standard in 1970

Store-Specific Bundles

• Bundles you created (not manufacturer bundles)
• Gift sets assembled by your store

Private Label Products

• Your own brand without registered GTINs
• White-label products

• Mass-produced products from known brands
• Books published after 1970
• Electronics with model numbers
• Any product with a barcode

You sell both branded products (with GTINs) and handmade items.

Configuration:

• Add Identifier Exists: Activate when less than two
• GTIN Attribute: Your EAN/UPC attribute
• Brand Attribute: Your brand/manufacturer attribute

The extension automatically handles both types.

Your entire catalog is handmade or custom.

Configuration:

• Add Identifier Exists: Activate

All products get identifier_exists=false.

You only sell products from established brands with GTINs.

Configuration:

• Add Identifier Exists: Deactivate
• Ensure GTIN and Brand are properly mapped

Problem: Google rejects products saying identifiers are missing.

Solutions:

1. Enable "Activate when less than two" in configuration
2. Verify GTIN attribute is correctly mapped
3. Check that products actually have GTIN values filled

Problem: Product shows identifier_exists=false but has a barcode.

Cause: The GTIN attribute isn't mapped or the value is in wrong format.

Solution:

1. Check GTIN attribute mapping
2. Verify GTIN format (13 digits for EAN, 12 for UPC)
3. Ensure no spaces or dashes in GTIN values

Problem: Google warns that GTINs are incorrect.

Common causes:

• Wrong checksum (last digit)
• Using MPN in GTIN field
• Leading zeros missing