Merge pull request #272883 from SnehaSudhirG/21Apr-TSGUpdate

added new scenario

Author: prmerger-automator[bot]

articles/automation/troubleshoot/managed-identity.md

@@ -3,14 +3,29 @@ title: Troubleshoot Azure Automation managed identity issues
 description: This article tells how to troubleshoot and resolve issues when using a managed identity with an Automation account.
 services: automation
 ms.subservice:
-ms.date: 10/26/2021
+ms.date: 04/22/2024
 ms.topic: troubleshooting
 ---
 
 # Troubleshoot Azure Automation managed identity issues
 
 This article discusses solutions to problems that you might encounter when you use a managed identity with your Automation account. For general information about using managed identity with Automation accounts, see [Azure Automation account authentication overview](../automation-security-overview.md#managed-identities).
 
+
+## Scenario: Runbook with system assigned managed identity fails with 400 error message
+
+### Issue
+
+Runbook with system assigned managed identity fails with the error as `unable to acquire for tenant organizations with error ManagedIdentityCredential authentication failed. Managed System Identity not found! Status 400 (Bad Request)`
+
+
+### Cause
+You haven't assigned permissions after creating the system-assigned managed identity. 
+
+### Resolution
+Ensure to assign the appropriate permissions for system-assigned managed identity. [Using a system-assigned managed identity for an Azure Automation account](../enable-managed-identity-for-automation.md)
+
+
 ## Scenario: Managed Identity in a Runbook cannot authenticate against Azure
 
 ### Issue