The Direct Answer
For wholesale cylinder SKUs without manufacturer GTIN, declare identifier_exists=false in the Google Merchant Center feed. Don’t invent GTINs — that’s a policy violation and a buyer-trust risk.
The Slightly Longer Explanation
Wholesale cylinder SKUs often don’t carry consumer-grade GTINs because they’re sold by the pallet through wholesale channels rather than scanned at retail.
Google Merchant Center accepts identifier_exists=false on the feed line. The product still indexes; it just isn’t matched against the GTIN-keyed product graph.
Pair this with a clear brand + MPN field so the listing remains identifiable. Invented GTINs trigger feed suspensions and damage trust signal.
Buyer Checklist
Before you act on the answer above, run through this:
- Set identifier_exists=false for SKUs without manufacturer GTIN
- Provide a clear brand + MPN combination instead
- Never invent GTINs — policy violation plus trust risk
- Confirm GMC feed validates before submission
Where This Sits In The Bigger Picture
This is an answer page — short by design, anchored to one question. The longer-form reasoning lives in the linked pages below.
Related reading:
The qualification wizard is the next step when you’re ready to turn the answer into a quote.
