Why did my People Data Labs match rate drop?
The People Data Labs help pages give 3 common reasons. The first to rule out: A minimum likelihood setting turns weaker matches into no match, so raising it lowers the match count.
What causes it?
A minimum likelihood setting turns weaker matches into no match, so raising it lowers the match count.
In the People Data Labs help:
The minimum likelihood score that a response must have to return a 200 status code.
Reference - Person Enrichment API, read 2026-11-12.Requiring certain fields in a response turns records without them into no match.
In the People Data Labs help:
The fields and data points that a response must have to return a 200 status code.
Reference - Person Enrichment API, read 2026-11-12.If a request carries a record ID along with other details, only the ID is used, so the other details do not help the match.
In the People Data Labs help:
If you enrich on ID and anything else, only ID is used and the other inputs for matching are ignored.
Reference - Person Enrichment API, read 2026-11-12.
How do I check it myself?
Check how much detail each request carries, since more data points raise the chance of a match.
In the People Data Labs help:
Adding more data points to a request increases the probability of a 200 response
Reference - Person Enrichment API, read 2026-11-12.Download the API logs for the days in question to see each call and its result.
In the People Data Labs help:
Download API logs to receive an email containing a link to download a CSV of all API calls for the filtered usage data.
Usage Page, read 2026-11-12.
How does People Data Labs work with Feder?
- Connect People Data Labs to Feder and it joins your Interest apps.
- When you connect People Data Labs, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.
Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.
See whether you can trust the numbers in People Data Labs, one of your Interest apps. Feder only reads. It never changes anything in People Data Labs.
What else goes wrong with these numbers?
- Why did my People Data Labs credit usage jump?People Data Labs
- Why does my People Data Labs search return fewer people than I expected?People Data Labs
- Why did Google Analytics stop collecting data?Google Analytics
- Why aren't my key events showing in Google Analytics?Google Analytics
- Why does Google Analytics show (not set)?Google Analytics
See every question.
Where do these answers come from?
Every cause and check on this page comes from the People Data Labs help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.