Google Ads API to block duplicate Lookalike user lists

A quiet however essential change is coming to the Google Advertisements API that may have an effect on how advertisers and builders create Lookalike consumer lists, particularly for Demand Gen campaigns.

What’s altering. Google will implement a uniqueness verify on Lookalike consumer lists, blocking duplicate lists with the identical seed lists, enlargement stage, and nation concentrating on. Makes an attempt to create a reproduction will return an API error after April 30.

Why we care. If you happen to use automated scripts or third-party instruments to generate viewers lists, an unhandled error might quietly break your marketing campaign workflows in the event you don’t replace integrations in time.

What you must do.

Audit present Lookalike lists and reuse ones that already match your supposed configuration reasonably than creating new ones
Replace your API error dealing with to catch the brand new DUPLICATE_LOOKALIKE error code in v24 and above, or RESOURCE_ALREADY_EXISTS in earlier variations

Backside line. This can be a housekeeping change to maintain Google’s methods steady, however the April 30 deadline is agency. If you happen to handle campaigns programmatically, deal with this as a technical to-do earlier than the top of April.

Google’s announcement. Upcoming changes to Lookalike user lists in the Google Ads API, starting April 30, 2026

Search Engine Land is owned by Semrush. We stay dedicated to offering high-quality protection of promoting subjects. Except in any other case famous, this web page’s content material was written by both an worker or a paid contractor of Semrush Inc.

Anu Adegbola has been Paid Media Editor of Search Engine Land since 2024. She covers paid search, paid social, retail media, video and extra.

In 2008, Anu began her profession delivering digital advertising and marketing campaigns (largely however not solely Paid Search) by constructing methods, maximising ROI, automating repetitive processes and bringing effectivity from each a part of advertising and marketing departments by means of inspiring management each on company, shopper and advertising and marketing tech facet. Outdoors modifying Search Engine Land article she is the founding father of PPC networking occasion – PPC Live and host of weekly podcast PPC Live The Podcast.

She can be a global speaker with a few of the phases she has offered on being SMX (US, UK, Munich, Berlin), Mates of Search (Amsterdam, NL), brightonSEO, The Advertising and marketing Meetup, HeroConf (PPC Hero), SearchLove, BiddableWorld, SESLondon, PPC Chat Stay, AdWorld Expertise (Bologna, IT) and extra.

#Google #Advertisements #API #block #duplicate #Lookalike #consumer #lists

SocialSignalCounter

Leave a Reply Cancel reply

Login