I’m running SonarQube Community Edition Version 7.9.3 to analyze my sources.
I found that the documentation link in Rule S4603 (Documentation App Engine | Documentation App Engine | Google Cloud) is no longer valid. A quick search on the site does not come up with anything similar
I already created a JIRA account to report this as a proper bug but it seems that my account is not allowed to create issues
It would be nice if someone could find a new reference for that rule and updated the documentation link accordingly.