How To Fix B1478 - No logical system name has been defined for client &

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 478

• Message text: No logical system name has been defined for client &

What causes this issue?

It has been determined that the logical system name &v2& has been
defined for source clients but not for the new client &v1&. In this
case there may be documents that have been created in source clients
under &v2& which cannot be found any longer in this new client.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You can define a logical system name for this new client and then start
the translation tool manually online.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1478 - No logical system name has been defined for client & ?

  The SAP error message B1478 ("No logical system name has been defined for client &") typically occurs when there is an issue with the configuration of logical systems in the SAP system. This error indicates that the system is unable to find a logical system name associated with the specified client.
  Cause:
  
  Missing Logical System Configuration: The logical system name for the client has not been defined in the system.
  Incorrect Client Settings: The client settings may not be properly configured to link to a logical system.
  Transport Management System (TMS) Issues: If you are working with transport requests, the logical system may not be set up correctly in the Transport Management System.
  Client-Specific Settings: The client you are working in may not have the necessary settings for logical systems.
  
  Solution:
  To resolve the error, follow these steps:
  
  
  Define Logical System:
  
  Go to transaction code SCC4.
  Check the list of clients and ensure that the logical system name is defined for the client in question.
  If it is not defined, you can create a new logical system by going to transaction code SBD1 (for creating a logical system) and entering the necessary details.
  
  
  
  Assign Logical System to Client:
  
  After creating the logical system, go back to transaction SCC4.
  Select the client and assign the newly created logical system to it.
  
  
  
  Transport Management System Configuration:
  
  If you are using TMS, ensure that the logical system is correctly configured in the TMS settings.
  You can check this by going to transaction STMS and navigating to the Transport Routes.
  
  
  
  Check RFC Connections:
  
  If the error occurs during remote function calls (RFC), ensure that the RFC connections are correctly set up and that the logical system names are consistent across systems.
  
  
  
  Restart the Process:
  
  After making the necessary changes, restart the process that triggered the error to see if it has been resolved.
  
  
  
  Related Information:
  
  Logical System Naming Convention: Logical system names typically follow a naming convention that includes the client number and the system name (e.g., CLNT100 for client 100).
  Client-Specific Settings: Each client in an SAP system can have its own settings, and logical systems are often used for integration with other systems or for transport purposes.
  Documentation: Refer to SAP Help documentation for more details on logical systems and their configuration.
  
  If the issue persists after following these steps, it may be necessary to consult with your SAP Basis team or refer to SAP Notes for further troubleshooting.