How To Fix B1455 - The logical system name & already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 455

• Message text: The logical system name & already exists

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 B1455 - The logical system name & already exists ?

  The SAP error message B1455, which states "The logical system name & already exists," typically occurs when you are trying to create or configure a logical system in SAP that already has an existing entry in the system. Logical systems are used in SAP to identify different systems in a landscape, such as development, quality assurance, and production systems.
  Cause:
  The error is caused by attempting to create a logical system with a name that is already in use. This can happen during various configuration activities, such as:
  
  Setting up a new client.
  Configuring system connections (RFC).
  Transporting configuration settings.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Existing Logical Systems:
  
  Go to transaction code SE03 (Transport Organizer Tools) or BD54 (Maintain Logical System).
  Check the list of existing logical systems to see if the name you are trying to use is already listed.
  
  
  
  Use a Different Name:
  
  If the logical system name you are trying to create already exists, consider using a different name that adheres to your naming conventions.
  
  
  
  Delete or Modify Existing Logical System:
  
  If the existing logical system is no longer needed, you can delete it. However, be cautious with this approach, as it may affect other configurations or connections.
  If you need to modify the existing logical system, you can do so in the same transaction (BD54).
  
  
  
  Check for Transport Requests:
  
  If the logical system was created as part of a transport request, ensure that the transport has been properly imported into the target system.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to logical systems for any specific guidelines or best practices.
  
  
  
  Related Information:
  
  Logical System Naming Conventions: Ensure that the logical system names follow the naming conventions set by your organization or SAP guidelines.
  Transport Management System (TMS): Understand how logical systems are used in TMS for transporting objects between different SAP systems.
  RFC Connections: Logical systems are often linked to RFC connections, so ensure that any related configurations are also checked.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis team or consulting SAP support for further assistance.