Is there an existing issue for this?

• I have searched the existing issues

Is there a StackOverflow question about this issue?

• I have searched StackOverflow

What happened?

This was long overdue, but they finally enforced it: https://github.blog/changelog/2025-07-21-code-scanning-will-stop-combining-multiple-sarif-runs-uploaded-in-the-same-sarif-file/
And you can see the first build failures here: https://github.com/android/nowinandroid/actions/runs/16457569114/job/46518103634?pr=1913

I've proposed a fix here:

• Fix issue with github/codeql-action/upload-sarif@v3 #1914

Relevant logcat output

Error: Code Scanning could not process the submitted SARIF file:
A delivery cannot contain multiple runs with the same category. Please upload a single run per category. For more information, see https://github.blog/changelog/2025-07-21-code-scanning-will-stop-combining-multiple-sarif-runs-uploaded-in-the-same-sarif-file/

Code of Conduct

• I agree to follow this project's Code of Conduct