Group of Vendor specific Devices show 43 devices as Group Members. Report Chart on a Dashboard only has 29 devices.
Dashboard View has less items than the Group it is set against.
Group has more items than Dashboard Report against the same Group.
DX NetOps Performance Management Portal web UI Group has different item count than Report against the same Group.
Missing Devices have no data for the Metrics and Time Frame configured on the Report.
Reports only include devices that have valid data for the metrics configured.
If a Table format Report looks for 5 Metrics from 5 Metric Families:
All supported DX NetOps Performance Management releases
Resolve the issue with missing data for affected devices.