Depending on your Netwrix Auditor version, the Netwrix Auditor System Health Log contains the following EventID: 1059
“Unable to report changes correctly, as the previous configuration snapshot has been removed or is partially invalid“.
You have manually launched data collection while the initial data collection has been already in progress after the monitoring plan creation. This has led to data collection failure.
To resolve this issue, in Netwrix Auditor Administrator Console navigate to Managed Objects –> your_Managed_Object_name and click Run to restart data collection.