diff --git a/docs/integrations/microsoft-azure/azure-event-hubs.md b/docs/integrations/microsoft-azure/azure-event-hubs.md
index c10c57b8c9..40219a942d 100644
--- a/docs/integrations/microsoft-azure/azure-event-hubs.md
+++ b/docs/integrations/microsoft-azure/azure-event-hubs.md
@@ -183,6 +183,10 @@ import AppUninstall from '../../reuse/apps/app-uninstall.md';
 
 ## Troubleshooting
 
+:::note
+Index Filter: If an invalid or non‑existent index is provided in the dashboard filters, an error is returned instead of a 'No Data to Display' message.
+:::
+
 ### Metrics collection via Azure Metrics Source
 
 To troubleshoot metrics collection via Azure Metrics Source, follow the instructions in [Troubleshooting Azure Metrics Source](/docs/send-data/hosted-collectors/microsoft-source/azure-metrics-source/#troubleshooting).
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