An application is configured with the snippet to report data to the Experience Collector, also known as DxC.
Some URLs do report Business Segment metrics but others do not.
This error can be seen in the ExperienceCollector logs, along with the JSON payload
ERROR c.c.a.c.p.h.e.RestResponseEntityExceptionHandler - error caught: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token
In particular that both our monitoring and the monitored framework are making similar API calls, and the framework in the application can override the JSON API we use.
This leads to creation of unnecessary escape characters in the JSON payload, you would see something like this in the log error: