Event-Scoped Custom Dimensions and Metrics Comes to Google App + Web Properties
https://support.google.comEvent-scoped custom dimensions and metrics are now available in Google Analytics App + Web properties. Previously similar functionality was presented as “custom parameter reporting”, and individual registration was required for every event:parameter pair, which was both labor and quota intensive.
With this launch, registered parameters graduate to property-wide custom event-scoped dimensions or metrics, preserving all historical aggregates. Going forward, custom dimensions and metrics can be registered once at the property-level, simplifying the workflow and significantly preserving quota.