Set the time granularity (Hourly, Daily, or Monthly) and complete the setup. Use audit reports with your private CA - AWS Documentation

: Add a reports section to your project's buildspec.yml file. Specify a name for the report group and the location of your test result files (e.g., JUNITXML or NUNITXML).

: Every time the build project runs, CodeBuild processes the test files and generates a new report.

In the navigation pane, choose and then Create report .