usage_metering reports are working fine for the current and some past months but nothing older.
The usage_metering probe creates a local db called usage_metering.h2.db. It stores the highest monthly values in it. These values are required for the report. Because of this it is not possible to generate a report for any point in time prior to the creation of the local db. The local db is created when the probe is deployed and auto recreated upon activate if it is missing.
Release : 9.0.2
Component : UIM - USAGE_METERING/BILLING
usage_metering reports can only be created for a point in time after the probe was deployed or the local db was rebuilt, and a scan run. It is recommended to configure the probe to run the scan on a schedule.