How To Fix CNV40107007 - Old and new Logical System are same &1 => &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV40107 - Package 40107 - Logical System

• Message number: 007

• Message text: Old and new Logical System are same &1 => &2

What causes this issue?

The logical system indicated as target value in the mapping table
already exists in the system. Consequently, it is not a mere rename,
but a merge.

System Response

The package was not designed for this.

How to fix this error?

Possibly, the package may be used nevertheless with a few
modifications. The tables in which a logical system is a key field have
to be given the "accepting duplicates" indicator in the CNV tables.
If data records with identical keys occur, all records except one are
deleted irrespective of whether their data areas are identical or not.
See the specification or contact SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV40107007 - Old and new Logical System are same &1 => &2 ?

  The SAP error message CNV40107007 indicates that there is an issue with the logical system configuration during a data migration or conversion process. Specifically, the error message states that the old and new logical systems are the same, which is not allowed in the context of the operation being performed.
  Cause:
  This error typically occurs in scenarios where a data migration or conversion process is trying to map data from an old logical system to a new logical system, but both logical systems are identical. This can happen due to:
  
  Incorrect Configuration: The logical system names may have been incorrectly configured in the migration settings.
  Misunderstanding of the Migration Process: The user may have intended to migrate data to a different logical system but mistakenly specified the same logical system for both the source and target.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Logical System Configuration:
  
  Go to the transaction code BD54 (Maintain Logical System) and verify the logical system names.
  Ensure that the old logical system and the new logical system are indeed different.
  
  
  
  Review Migration Settings:
  
  If you are using a migration tool or program, check the settings to ensure that the source and target logical systems are correctly specified.
  Make sure that the mapping of logical systems is set up correctly in the migration configuration.
  
  
  
  Adjust Migration Parameters:
  
  If you are using a specific migration program, look for parameters that define the old and new logical systems and ensure they are set correctly.
  
  
  
  Consult Documentation:
  
  Review the documentation for the specific migration tool or process you are using to ensure that you are following the correct steps.
  
  
  
  Testing:
  
  After making the necessary adjustments, run a test migration to confirm that the error has been resolved.
  
  
  
  Related Information:
  
  Logical Systems: In SAP, logical systems are used to identify different systems in a landscape (e.g., development, quality assurance, production). Each logical system must have a unique name.
  Data Migration: This process often involves transferring data from one system to another, and it is crucial to ensure that the source and target systems are correctly defined to avoid conflicts.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error message.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert for further assistance.