This product reached the end of support date on March 31, 2021.
17 Oct 2017
XHR calls captured via UEM are not able to be carted based on the target URI.This info is actually available under the actions details, it is listed as "Action Request Target:" but it is not available to create a measure on this.
22 Feb 2018
I created a RFE here https://answers.dynatrace.com/idea/197435/view.html