Read-create flag (default disabled) enabling the User-Location-Change container-trigger, which adds a List-of-Traffic-Data-Volumes container to the CDR whenever the subscriber's location changes. Note: the shipped DESCRIPTION for this object is copy-pasted from the QoS-Change trigger's text (it says 'CitQosChange specifies... change in Qos'); the explanation here instead follows the object's own name -- User Location Change -- which is unambiguous from the naming and table position. Lets operators capture finer-grained CDR detail around subscriber mobility events for billing/analytics.