Answer by Xu G. ·
Alerting on specific HTTP return code can be achieved by a specific script.
Here is the logic about how to achieve this requirement in the script.
Attached please find a sample script. Please just replace the URL "https://www.google.com/_/og/promos/z" and return code in the custom action per your requirement.
Object URL: https://www.google.com/_/og/promos/z
The Correct Return Code: 200
Best Regards, Leah