How To Fix CA_TTE_TEST149 - IPC dispatcher error on RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CA_TTE_TEST - TTE Test Messages

• Message number: 149

• Message text: IPC dispatcher error on RFC destination &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CA_TTE_TEST149 - IPC dispatcher error on RFC destination &1 ?

  The SAP error message "CA_TTE_TEST149 IPC dispatcher error on RFC destination &1" typically indicates an issue with the Inter-Process Communication (IPC) dispatcher when trying to connect to a Remote Function Call (RFC) destination. This error can arise due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target RFC destination.
  Configuration Errors: The RFC destination may not be configured correctly in the SAP system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Load: The target system may be under heavy load or experiencing performance issues, causing the IPC dispatcher to fail.
  Service Availability: The service or application on the target system may not be running or may have crashed.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication between the systems.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to verify that the network connection to the RFC destination is active.
  Ensure that the hostname and port specified in the RFC destination are correct.
  
  
  
  Review RFC Destination Configuration:
  
  Go to transaction SM59 and check the configuration of the RFC destination. Ensure that all parameters are set correctly.
  Test the connection from the SAP GUI using the "Test Connection" button in the RFC destination configuration.
  
  
  
  Verify User Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  Check the user roles and profiles in transaction SU01.
  
  
  
  Monitor System Performance:
  
  Check the performance of the target system to see if it is under heavy load. Use transaction SM50 or SM66 to monitor work processes.
  If the system is overloaded, consider optimizing performance or scheduling jobs during off-peak hours.
  
  
  
  Check Service Availability:
  
  Ensure that the necessary services on the target system are running. This may involve checking the application server or relevant services.
  
  
  
  Firewall and Security Settings:
  
  Verify that there are no firewall rules or security settings blocking the communication between the two systems.
  Consult with your network/security team if necessary.
  
  
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs and Traces: Review the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages that may provide more context.
  SAP Community: Consider searching or posting in the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.