00205 - Error in APPC CONN headers

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 205

• Message text: Error in APPC CONN headers

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00205 - Error in APPC CONN headers ?

  The SAP error message "00205 Error in APPC CONN headers" typically indicates an issue with the communication between SAP systems, particularly when using the Advanced Program-to-Program Communication (APPC) protocol. This error can arise due to various reasons, including configuration issues, network problems, or incorrect settings in the SAP system.
  Causes:
  
  
  Configuration Issues: Incorrect settings in the SAP system configuration for the APPC connection can lead to this error. This includes parameters in the SAP profiles or the connection settings in transaction codes like SM59.
  
  
  Network Problems: Network issues such as firewalls blocking the communication, incorrect routing, or network outages can cause this error.
  
  
  Version Mismatch: If there is a mismatch in the versions of the SAP systems trying to communicate, it can lead to header errors.
  
  
  Resource Limitations: Insufficient resources on the server, such as memory or CPU, can also lead to communication errors.
  
  
  Incorrect Connection Parameters: If the connection parameters (like the partner name, LU name, etc.) are not correctly defined, it can result in this error.
  
  
  Solutions:
  
  
  Check Configuration: Review the configuration settings for the APPC connection in transaction SM59. Ensure that all parameters are correctly set, including the LU name, partner name, and other relevant settings.
  
  
  Network Troubleshooting: Verify the network connectivity between the SAP systems. Check for any firewalls or network devices that might be blocking the APPC communication. Use tools like ping or traceroute to diagnose network issues.
  
  
  Review SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates that resolve known issues.
  
  
  Monitor System Resources: Use transaction SM50 or SM66 to monitor the system resources. Ensure that the server has enough memory and CPU resources available.
  
  
  Test Connection: Use the connection test feature in SM59 to verify that the connection can be established successfully. This can help identify if the issue is with the connection itself.
  
  
  Check Logs: Review the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages or information that might provide more context about the issue.
  
  
  Consult Documentation: Refer to the official SAP documentation for APPC connections to ensure that all settings and configurations are in line with best practices.
  
  
  Related Information:
  
  APPC Protocol: Advanced Program-to-Program Communication (APPC) is a protocol used for communication between SAP systems and other applications. Understanding how it works can help in troubleshooting related issues.
  SAP Basis Team: If you are unable to resolve the issue, it may be beneficial to involve your SAP Basis team, as they have the expertise in system configurations and network settings.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the "00205 Error in APPC CONN headers" error in your SAP environment.