How To Fix TN660 - Error in communication with Transport Management System (STMS)

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 660

• Message text: Error in communication with Transport Management System (STMS)

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 TN660 - Error in communication with Transport Management System (STMS) ?

  The SAP error message TN660 indicates that there is an issue with communication between the SAP system and the Transport Management System (TMS). This error can occur for various reasons, and understanding the cause is essential for troubleshooting and resolving the issue.
  Causes of TN660 Error
  
  
  TMS Configuration Issues: The TMS may not be properly configured. This includes incorrect settings in the Transport Directory or missing transport routes.
  
  
  Network Issues: There may be network connectivity problems between the SAP systems involved in the transport process.
  
  
  Authorization Issues: The user may not have the necessary authorizations to perform transport operations.
  
  
  Transport Directory Issues: The transport directory may be corrupted or not accessible.
  
  
  System Lock: The target system may be locked or not available for transport operations.
  
  
  RFC Connection Problems: The Remote Function Call (RFC) connections between the systems may not be set up correctly or may be down.
  
  
  Solutions to TN660 Error
  
  
  Check TMS Configuration:
  
  Go to transaction STMS and check the configuration of the Transport Management System.
  Ensure that the transport routes are correctly defined and that all systems are included in the transport domain.
  
  
  
  Verify Network Connectivity:
  
  Test the network connection between the systems involved. You can use tools like ping or telnet to check connectivity.
  Ensure that firewalls or network policies are not blocking the required ports.
  
  
  
  Review Authorizations:
  
  Ensure that the user performing the transport has the necessary authorizations. Check roles and profiles assigned to the user.
  
  
  
  Check Transport Directory:
  
  Verify that the transport directory is accessible and not corrupted. You can check the directory path defined in the TMS configuration.
  
  
  
  Check System Status:
  
  Ensure that the target system is up and running. You can check the system status in transaction SM51 or SM66.
  
  
  
  Review RFC Connections:
  
  Go to transaction SM59 and check the RFC connections. Ensure that they are correctly configured and that the connection is working.
  Test the RFC connection to ensure it is functioning properly.
  
  
  
  Check Logs:
  
  Review the transport logs for any additional error messages that may provide more context about the issue. You can find logs in transaction STMS under the transport logs section.
  
  
  
  Restart TMS:
  
  In some cases, restarting the TMS can resolve temporary communication issues. You can do this from transaction STMS.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  STMS: Transport Management System
  SM59: RFC Destinations
  SM51: List of SAP Servers
  SM66: Global Work Process Overview
  
  
  
  SAP Notes: Check for relevant SAP Notes in the SAP Support Portal that may address specific issues related to TMS and the TN660 error.
  
  
  Documentation: Refer to the official SAP documentation for Transport Management System for detailed configuration and troubleshooting steps.
  
  
  By following these steps, you should be able to identify and resolve the TN660 error in your SAP system. If the issue persists, consider reaching out to SAP support for further assistance.