This issue might occur in Spectrum-UIM integration. The main symptom is related to disappearing UIM inventory in the spectrum console.
The missing inventory is moved to the UIM unreported inventory container. This issue is intermittent and the inventory keeps disappearing and reappearing again in random intervals.
Release: 20.4 up to CU8 (CU8 affected too)
Spectrumgtw version 8.69 / uim version 20.4.
DX NetOps spectrum 21.2.1
Code defect in discovery_server probe
Please deploy the discovery_server20.46T1 to your primary hub.