How To Fix /CFG/TR_PAR028 - Error in PUSH TRANSPORT parallelization START_THREAD, communication fail

SAP Error Message - Details

• Message type: E = Error

• Message class: /CFG/TR_PAR -

• Message number: 028

• Message text: Error in PUSH TRANSPORT parallelization START_THREAD, communication fail

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /CFG/TR_PAR028 - Error in PUSH TRANSPORT parallelization START_THREAD, communication fail ?

  The SAP error message /CFG/TR_PAR028 Error in PUSH TRANSPORT parallelization START_THREAD, communication fail typically indicates an issue with the transport management system (TMS) in SAP, particularly when trying to execute parallel transport requests. This error can arise due to various reasons, including network issues, configuration problems, or issues with the transport directory.
  Causes:
  
  Network Issues: There may be a communication failure between the SAP systems involved in the transport process, which could be due to network problems or firewall settings.
  Transport Directory Issues: The transport directory may be incorrectly configured or may have permission issues that prevent proper access.
  TMS Configuration: Incorrect configuration of the Transport Management System can lead to communication failures.
  System Load: High system load or resource constraints can also lead to failures in starting parallel transport threads.
  Transport Request Locks: If a transport request is locked or in use by another process, it may cause communication failures.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems involved in the transport. You can use tools like ping or traceroute to diagnose network issues.
  Review TMS Configuration: Verify the TMS configuration in transaction STMS. Ensure that all systems are correctly configured and that the transport routes are set up properly.
  Check Transport Directory: Ensure that the transport directory is correctly configured and that the necessary permissions are set. You can check the transport directory settings in transaction SE03.
  Monitor System Load: Check the system load and resource usage. If the system is under heavy load, consider scheduling transports during off-peak hours.
  Check for Locks: Use transaction SE01 to check if there are any locks on the transport requests. If a request is locked, you may need to unlock it or wait for the current process to complete.
  Review Logs: Check the transport logs for more detailed error messages. You can find logs in transaction STMS under the transport logs section.
  Restart Transport Services: If the issue persists, consider restarting the transport services on the affected systems.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may address this specific error. You can search for notes in the SAP Support Portal.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation regarding transport management and parallel transport processes for best practices and troubleshooting steps.
  
  If the problem continues after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.