Troubleshooting cPanel Disk & Bandwidth Usage Billing figures showing conflated values

Symptom

The Metric Statistics for cPanel Disk and Bandwidth usage can, in some circumstances, record higher than expected values.

The data collected by the daily automation tasks shows conflated values. Clicking the Refresh Now button results in a lower value being recorded:

Conflated Disk and Bandwidth Usage
Accurate Disk Space and Bandwidth Usage

Solution