How To Fix CMA_CI001 - System &2 from domain &1 unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: CMA_CI - CMS-CI Messages

• Message number: 001

• Message text: System &2 from domain &1 unknown

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 CMA_CI001 - System &2 from domain &1 unknown ?

  The SAP error message CMA_CI001 with the description "System &2 from domain &1 unknown" typically indicates that the system is unable to recognize or find the specified system in the given domain. This can occur in various contexts, such as when dealing with system landscapes, transport management, or when trying to access certain functionalities that require system identification.
  Causes:
  
  Incorrect Configuration: The system might not be properly configured in the domain, leading to it being unrecognized.
  Network Issues: There could be network connectivity problems preventing the system from being reached.
  Domain Mismatch: The system might be part of a different domain than expected.
  Transport Directory Issues: If this error occurs during transport operations, it may be due to issues in the transport directory or configuration.
  System Decommissioning: The system might have been decommissioned or removed from the landscape but is still referenced in some configurations.
  
  Solutions:
  
  Check Configuration: Verify the configuration settings in the SAP system to ensure that the system is correctly defined in the domain.
  Network Connectivity: Ensure that there are no network issues preventing access to the specified system. You can use tools like ping or traceroute to check connectivity.
  Domain Verification: Confirm that the system is indeed part of the specified domain. You may need to check the domain settings in the SAP Landscape Management (LaMa) or similar tools.
  Transport Directory: If the error occurs during transport operations, check the transport directory settings and ensure that the system is correctly listed.
  System Status: Check if the system is active and operational. If it has been decommissioned, remove any references to it in the configuration.
  SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on system configuration and transport management.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Support Tickets: If the issue persists, consider opening a support ticket with SAP for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the CMA_CI001 error effectively.