Ignore web request errors
By default, Dynatrace marks all
5xx response status codes as web request errors. However, it can happen that some unsuccessful HTTP codes do not in fact indicate an issue within your application. For example, sometimes the
401 Unauthorized status code just shows that the user decided not to sign in. Another example is the
429 Too Many Requests code, which can indicate throttling issues that are not caused by your application.
To ignore certain HTTP status codes, configure which status codes should not be marked as errors. When creating an exclusion rule, you can either add individual HTTP status codes, such as
401, or status code ranges, such as
To create an exclusion rule
In the Dynatrace menu, go to Mobile.
Choose the application for which you want to configure an exclusion rule.
Select Browse (…) > Edit.
From the application settings menu, go to Request errors.
Select Add exclusion rule, and specify the HTTP status code or code range that should be treated as successful.
After setting up an exclusion rule, web requests with previously erroneous status codes will count as successful web requests against the error rate. This will affect your application Apdex rating, request error rate, and web request error list, as well as some user action and custom metrics.
For example, see the screenshots of the application overview page below and note the drop in the web request error rate. This happened after a rule was configured to ignore the
401 Unauthorized response status code for this application. Also note the error rate decrease for the application top providers as well as the higher Apdex rating and lower error rate for one of the user actions.