You must go to your Project Settings in the CircleCI app to Enable Build Processing (preview) as a prerequisite for using this endpoint.
IMPORTANT – This endpoint does not yet support the build_parameters options that the job-triggering endpoint supports.
You may safely go back by disabling the radio button for this feature on your Advanced Settings for your project if jobs or workflows fail the new build processing.
Resolved Issues
Resolved a known performance issue which caused a frozen page for organizations with many branches.