Splunk AppDynamics limits the number of backend systems that can be registered and tracked. Once the limit is reached (databases and remote services combined), additional backend are put in the "All other traffic for <type>" category.

The "type" is the backend type such as HTTP or Web Service. HTTP calls and JMS queues are the most common types that may reach the limit with the default configuration rules.

On a flow map, the category appears as follows:

Metrics for the backend calls grouped in the "All other traffic" category are aggregated. If the group includes backend instances that you want to be individually tracked, you can manage backend detection, as described in Manage Backend Discovery.