Google Ads bug blocks edits to Performance Max asset groups

A new bug in Google Ads is preventing some advertisers from editing and saving existing Performance Max (PMAX) asset groups. Users report seeing error messages when attempting to make changes in the platform interface, blocking updates from being saved.

Why we care. Performance Max relies heavily on asset freshness and iteration. If advertisers can’t update asset groups, campaigns risk running with outdated creative, messaging, or offers — directly impacting performance and efficiency.

What advertisers are seeing. Affected users encounter an error message reading, “An error occurred. Please try again later. Value is required,” when attempting to edit asset group details. The error appears in the Google Ads UI and prevents changes from being saved, even when required fields appear complete.

Google’s response. Google has acknowledged the issue and says it is actively investigating. As of now, the company has not shared a timeline for a fix or provided additional guidance through official status channels.

Temporary workaround. Advertisers can still make changes using Google Ads Editor, then upload updates directly to their accounts. While functional, the workaround adds friction for teams accustomed to managing PMAX exclusively in the web interface.

What to do now. Advertisers running Performance Max campaigns should double-check recent asset group edits to confirm changes were successfully saved. Those planning creative updates may want to route edits through Ads Editor until the issue is resolved.

What’s next. Until Google ships a fix, the bug adds another layer of uncertainty to Performance Max management — reinforcing the importance of version checks and alternative workflows for advertisers relying heavily on PMAX.

First seen. The issue was flagged publicly by PPC professional Chelsea Harding and shared the error message she recieved on LinkedIn.