How To Fix XT020 - Include systems in the domain from the controller system only

SAP Error Message - Details

• Message type: E = Error

• Message class: XT - Transport Management System

• Message number: 020

• Message text: Include systems in the domain from the controller system only

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message XT020 - Include systems in the domain from the controller system only ?

  The SAP error message XT020, which states "Include systems in the domain from the controller system only," typically occurs in the context of system landscape management, particularly when dealing with SAP's system landscape directory (SLD) or when configuring system connections in a distributed environment.
  Cause:
  The error usually arises due to one of the following reasons:
  
  Incorrect Configuration: The system is trying to include or manage systems in a domain that are not properly configured or are being included from a non-controller system.
  Domain Management Issues: The system may not be recognized as the controller for the domain, leading to restrictions on including other systems.
  Authorization Issues: The user or system may not have the necessary authorizations to perform the action of including systems in the domain.
  Network Issues: There may be connectivity issues between the systems that are supposed to be included in the domain.
  
  Solution:
  To resolve the XT020 error, you can follow these steps:
  
  
  Check Configuration:
  
  Ensure that the system you are using to include other systems is indeed the controller system for the domain.
  Verify the configuration settings in the SLD or the relevant system management tools.
  
  
  
  Use the Correct System:
  
  Make sure you are logged into the correct controller system when attempting to include other systems in the domain.
  
  
  
  Review Authorizations:
  
  Check the user authorizations to ensure that you have the necessary permissions to include systems in the domain.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the controller system and the systems you are trying to include.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for system landscape management for specific instructions on how to configure and manage domains.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  System Logs:
  
  Review system logs for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Related Information:
  
  SAP System Landscape Directory (SLD): This is a central component for managing the system landscape in SAP environments. Understanding how SLD works can help in troubleshooting issues related to system inclusion.
  Domain Management: Familiarize yourself with how domains are structured and managed within your SAP environment.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.