1. In the Azure portal, type Recovery Services Vaults in the search box, select Recovery Services Vaults from the search results then select Vault1.
Alternatively, browse to Recovery Services Vaults in the left navigation pane.
2. In the properties of Vault1, scroll down to the Monitoring section and select Diagnostic Settings.
3. Click the Add a diagnostic setting link.
4. Enter a name in the Diagnostic settings name box.
5. In the Log section, select AzureBackupReport.
6. In the Destination details section, select Send to log analytics
7. Select the WS12345678 Azure Log Analytics workspace.
8. Click the Save button to save the changes.
Reference:
https://docs.microsoft.com/en-us/azure/backup/backup-azure-diagnostic-events
