How To Fix 5A172 - CPI-C error & during allocation

SAP Error Message - Details

• Message type: E = Error

• Message class: 5A - Basis Personnel Management

• Message number: 172

• Message text: CPI-C error & during allocation

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 5A172 - CPI-C error & during allocation ?

  The SAP error message 5A172 typically indicates a CPI-C error during allocation, which is related to communication issues between SAP systems or between an SAP system and an external system. This error can occur in various scenarios, such as when trying to establish a connection, during data transfer, or when allocating resources.
  Causes of Error 5A172
  
  Network Issues: Problems with the network connection between the SAP systems or between SAP and external systems can lead to this error.
  Configuration Errors: Incorrect configuration of the CPI-C settings in the SAP system can cause communication failures.
  Resource Limitations: Insufficient resources (like memory or CPU) on the server can lead to allocation errors.
  System Load: High load on the SAP system or the network can result in timeouts or failures in communication.
  Firewall or Security Settings: Firewalls or security settings may block the necessary ports or protocols required for CPI-C communication.
  
  Solutions to Error 5A172
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the involved systems. You can use tools like ping or traceroute to diagnose network issues.
  Review CPI-C Configuration: Verify the CPI-C configuration settings in the SAP system. Ensure that the parameters are correctly set up in transaction RZ10 or RZ11.
  Monitor System Resources: Check the system resources (CPU, memory, etc.) on the SAP server. Use transaction SM50 or SM66 to monitor active processes and resource usage.
  Adjust Timeout Settings: If the error is due to timeouts, consider adjusting the timeout settings in the CPI-C configuration.
  Check Firewall Settings: Ensure that the necessary ports for CPI-C communication are open and not blocked by firewalls or security settings.
  Review SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates.
  Consult Logs: Review the system logs (transaction SM21) and developer traces (transaction ST22) for more detailed error messages that can provide additional context.
  
  Related Information
  
  CPI-C Protocol: CPI-C (Common Programming Interface - Communication) is a protocol used for communication between SAP systems and other systems. Understanding how it works can help in troubleshooting.
  SAP Basis Team: If you are unable to resolve the issue, it may be necessary to involve your SAP Basis team or SAP support for further assistance.
  Documentation: Refer to the official SAP documentation for more details on CPI-C configuration and troubleshooting.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the 5A172 CPI-C error during allocation.