How To Fix CRM_IC_APPL_UI_CHMSG400 - IM initialization failed for &1; maximum number of IM sessions reached

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_IC_APPL_UI_CHMSG - Message class for CRM_IC_APPL_UI_COMMCHANNELS

• Message number: 400

• Message text: IM initialization failed for &1; maximum number of IM sessions reached

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_IC_APPL_UI_CHMSG400 - IM initialization failed for &1; maximum number of IM sessions reached ?

  The SAP error message "CRM_IC_APPL_UI_CHMSG400 IM initialization failed for &1; maximum number of IM sessions reached" typically occurs in the context of the SAP CRM Interaction Center (IC) when the system has reached the maximum number of allowed Interaction Management (IM) sessions. This can prevent new sessions from being initialized, leading to the error message.
  Cause:
  
  Maximum Session Limit Reached: The system has a predefined limit on the number of concurrent IM sessions that can be active at any given time. When this limit is reached, new requests for IM sessions will fail.
  Session Leaks: Sessions may not be properly closed or terminated, leading to a buildup of active sessions.
  Configuration Settings: The maximum number of sessions may be set too low for the current usage patterns.
  
  Solution:
  
  
  Increase Maximum Session Limit:
  
  You can increase the maximum number of allowed IM sessions in the system configuration. This is typically done in the SAP system settings (transaction code SPRO).
  Navigate to: SAP Customizing Implementation Guide -> Customer Relationship Management -> Interaction Center -> General Settings -> Define Maximum Number of Sessions.
  Adjust the settings according to your needs and save the changes.
  
  
  
  Monitor and Manage Sessions:
  
  Regularly monitor the active sessions to identify any that are not being closed properly.
  Use transaction codes like SM04 (User Overview) or SM50 (Process Overview) to check for active sessions and terminate any that are no longer needed.
  
  
  
  Session Cleanup:
  
  If there are sessions that are stuck or not responding, you may need to manually terminate them to free up resources.
  
  
  
  Review Application Logic:
  
  If your application logic is creating sessions without closing them, review the code to ensure that sessions are properly managed.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may address this issue or provide additional guidance. You can search for notes related to CRM and IM sessions in the SAP Support Portal.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM04, SM50, and SPRO for monitoring and configuration.
  SAP Documentation: Review the official SAP documentation for CRM Interaction Center for best practices on session management.
  Performance Monitoring: Consider implementing performance monitoring tools to keep track of session usage and identify potential bottlenecks.
  
  By following these steps, you should be able to resolve the error and prevent it from occurring in the future.