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Remarketing lists too small to serve

Remarketing lists that exist but hold too few people for Google to serve, such as basket abandoners at zero. The tag that fills them may be missing or not firing.

By the Optizads team

On this page
  1. Why it matters
  2. How Oppy decides
  3. Check it yourself in Google Ads
  4. What to do about it
  5. Terms on this page
  6. Other checks in this area

The short answer

Lists named Basket abandoners or Past buyers can sit at zero people for years. The tag that fills them is missing or not firing, and the correct names stop anyone asking. Oppy lists the audience lists too small to serve on both Search and Display.

Why it matters

A basket abandoner list is the cheapest revenue in ecommerce: people who chose a product and stopped at the last step. An empty one means none of them can be reached again.

A list too small to serve also makes any campaign built on it silent. It looks set up, and it does nothing.

How Oppy decides

The check reads every audience list with its size for Display and for Search.

Checks that weigh money or clicks judge what they find on your own account's numbers, not on one figure applied to every account, so what counts as a problem on a small account is not the same on a large one. Checks on settings read how the account is set up.

When there is too little to go on, the check says so instead of guessing. A finding always comes with the rows behind it, so you can read the evidence before you decide.

How the check runs
This check
Step of the auditStructure
What it readsAudience lists
Needs trustworthy conversionsNo. It does not wait for the tracking step.
What happens nextReported in the audit with the rows behind it. The decision stays with you.

Check it yourself in Google Ads

  1. In Google Ads, open Tools, then Shared library, then Audience manager.
  2. Add the size columns for Search and Display if they are not shown.
  3. Note the lists too small to serve on both, and those at zero.
  4. For each, check how it is filled: the Google tag, Google Analytics, or a customer upload.

What to do about it

For lists filled by the website, check that the Google tag or Google Analytics audience is installed and firing on the right pages, such as the basket page for abandoners.

For customer lists, upload a fresh file. Remove lists nobody will fill, so the ones that remain are trusted.

Terms on this page

Other checks in this area

Questions, answered.

Anything else? Ask Oppy in the product, or write to the team.

Why is my remarketing list empty?

Usually the tag or Google Analytics event that adds people is missing, firing on the wrong page, or blocked by consent settings. Check the list's source and test it on the site.

How many people does a remarketing list need?

Google needs at least 100 active people on a list in the last 30 days before it can serve on Search, Display or YouTube.

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