Google Ads API v24.2: What TikTok Sellers Need to Know About Smart Campaigns and AI Transparency in 2026

The key change in Google Ads API v24.2 is the discontinuation of Smart Campaign creation via the API starting August 3, 2026. This move, confirmed in the official release notes, forces advertisers and agencies to migrate to other campaign types, such as Performance Max, for ecommerce and app promotion. For sellers who rely on TikTok video ads alongside Google Ads, this update signals a broader industry shift toward AI-driven, transparent, and automated advertising.

Why Google Is Stopping Smart Campaign Creation via API

Google Ads API v24.2 introduces a new SmartCampaignErrorEnum.CREATION_FAILED error code that blocks any attempt to create a new Smart Campaign through the API after August 3, 2026. Existing Smart Campaigns will continue to run, but no new ones can be launched programmatically. According to a Search Engine Land report, this deprecation is part of Google’s strategic push toward more advanced automation like Performance Max, which offers deeper machine learning and cross-channel optimization. For TikTok sellers who often manage both Google Shopping and TikTok Shop ads, this means revisiting automated campaign setups that previously relied on Smart Campaigns for simple product promotion.

AI Transparency and the EU AI Act

Version 24.2 introduces SyntheticContentInfo fields within ad assets, requiring advertisers to label AI-generated or synthetic content. This feature, detailed in the Google Ads developer blog, prepares the platform for the impending EU AI Act. Any ad creative—including video ads for TikTok or other channels—that uses generative AI must carry these disclosures. For sellers using AI tools to create product videos, this becomes a compliance necessity. The Search Engine Land coverage highlights that this transparency helps avoid regulatory penalties and builds trust with consumers.

Enhanced Reporting and Security

Performance Max campaigns now include placement-level reporting, allowing advertisers to see where their ads appear across YouTube, Display, Search, and more. Additionally, Multi-Party Authorization reviews strengthen account security, requiring multiple approvals for sensitive changes. These enhancements were summarized by Search Engine Roundtable and others. For sellers using TikTok ads in parallel, having granular Performance Max data helps compare channel performance and allocate budgets more effectively.

Implications for TikTok Video Ad Sellers

TikTok sellers who also run Google Ads must adapt to these API changes. The deprecation of Smart Campaigns via API affects tools that bulk-create campaigns; sellers should migrate to Performance Max or standard campaigns. Meanwhile, TikTok’s own ad platform is evolving: the TikTok Shop Ad Manager 2.0 overhaul introduced GMV Max as the sole campaign type for sales objectives, along with new ad formats like Collage Carousel. Both platforms are converging on AI-driven, hands-off campaign management. Sellers need to ensure their creative assets comply with AI disclosure rules on Google, even if those same videos run on TikTok.

Google vs. TikTok: The Ecommerce Ad Battle

Rumors have emerged that Google may algorithmically deprioritize TikTok Shop listings in Google Shopping results. An article from Online Store News cites multiple sources suggesting this potential move. While unconfirmed, it indicates heightened competition. Sellers should diversify their ad spend and not rely solely on Google Shopping for traffic from TikTok Shop. At the same time, TikTok’s creator affiliate program is proving highly effective for DTC brands, as reported by Online Store News, with lower CAC than Meta campaigns. The interplay between Google Ads updates and TikTok’s growth makes it essential for sellers to stay agile.

Feature	Google Ads v24.2	TikTok Ad Manager 2.0
Campaign automation	Performance Max growth; Smart Campaign API deprecated	GMV Max for sales objectives
AI transparency	SyntheticContentInfo required	Not yet mandated, but expected under EU AI Act
Reporting	Placement-level for PMax; new segments	Collage Carousel & Smart+ controls
Security	Multi-Party Authorization	Standard account security

Preparing for the Changes

Sellers using automated campaign tools should audit their workflows for Smart Campaign dependencies. Upgrade Google Ads client libraries to support v24.2 endpoints. For TikTok video ads, ensure that any AI-generated content is labeled prospectively. The shift toward Performance Max and GMV Max means less manual control but potentially better results if creatives are optimized for each platform. Monitor Google’s official release notes for any further updates, and test new PMax placement reports to refine targeting.

Conclusion

Google Ads API v24.2 marks a turning point: Smart Campaigns are ending, AI transparency is mandatory, and reporting is richer. For TikTok sellers, the changes reinforce the need for a multi-platform strategy that complies with emerging regulations and leverages automation intelligently. By staying informed and adapting campaigns early, sellers can navigate this transition smoothly and continue to drive video ad performance across both Google and TikTok.

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This article is for informational purposes and does not constitute professional advertising advice. Sellers should consult with their ad account representatives for specific migration steps.