An alert states, "Objects are not receiving data from adapter instance", but it does not specify which devices are affected.
VCF Operations 9.0.x
VMware Aria Operations 8.18.x
Telco Cloud Platform 5.1
When an object that normally receives data from an adapter during a collection cycle does not receive data in the latest collection cycle, the Instance Generated|Number of No Data Receiving Objects metric for the adapter instance is changed. The alert is triggered against an adapter when the Number of No Data Receiving Objects metric is > 0 by default.
The following KBs identify some known issues that can cause the alert to falsely trigger for specific object types from specific adapter instances: