Sally is promoting her online store that sells vintage goods and custom artwork. What does she need to include for unique product identifiers?
Correct Answer
D) Put ‘false’ in the ‘identifier exists’ attribute
Key takeaways
Set identifier exists to false when no manufacturer identifier exists.
Vintage, handmade and custom items routinely have none.
Never fabricate a GTIN — a false match is worse than a missing one.
Why is this the correct answer?
Vintage goods and custom artwork have no manufacturer identifiers, and the correct response is to declare that explicitly by setting identifier exists to false. That tells Merchant Center the omission is deliberate so the items process cleanly. Fabricating a value is worse than omitting one, because a made-up GTIN can match your listing to an entirely different product.
Why are the other options wrong?
A) Put ‘unavailable’ in the ‘gtin’ attribute
The gtin attribute expects a valid identifier or nothing at all. The word unavailable is not a valid value.
B) Submit ‘1’ as the ‘mpn’ attribute
Submitting 1 as a part number is a fabricated identifier, which risks matching your item to something unrelated.
C) Submit a randomly generated number in the ‘gtin’ attribute
A randomly generated number is a false identifier. It may collide with a real product's GTIN, which is actively harmful.
Frequently asked questions about this topic
Will products without identifiers perform worse?
They can be harder for Google to match to comparison and review data, which are useful signals. The answer is to supply strong brand, title and attribute data instead, not to invent an identifier.
Official documentation: https://support.google.com/merchants/answer/160161?hl=en
Topics in this question
About the Shopping Ads Certification
The Shopping Ads Certification checks that you can run retail campaigns end to end: product data in Merchant Center, linking it to Google Ads, and choosing between Standard Shopping and Performance Max to drive sales and value.
Exam guide and all 407 Google Ads Shopping questions →Related Google Ads Shopping questions
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