How To Fix CNV_20306_CHECK025 - Explicit controlling area merge into controlling area &1 found

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20306_CHECK - Message Class for package CNV_20306_CHECK

• Message number: 025

• Message text: Explicit controlling area merge into controlling area &1 found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20306_CHECK025 - Explicit controlling area merge into controlling area &1 found ?

  The SAP error message CNV_20306_CHECK025 indicates that there is an issue related to the merging of controlling areas during a data migration or conversion process. This error typically arises in the context of SAP S/4HANA migrations or when using the SAP Conversion Tools.
  Cause:
  The error message suggests that there is an explicit merge of controlling areas detected, which means that the system has found that two or more controlling areas are being merged into a single controlling area (denoted as &1). This can happen due to:
  
  Configuration Issues: The controlling areas may not be properly configured in the system, leading to conflicts during the merge process.
  Data Inconsistencies: There may be inconsistencies in the data related to the controlling areas that are being merged.
  Incorrect Mapping: The mapping of controlling areas in the migration settings may not be correctly defined, leading to an attempt to merge controlling areas that should remain separate.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Configuration: Check the configuration of the controlling areas in the SAP system. Ensure that they are set up correctly and that there are no conflicts.
  
  
  Check Migration Settings: Review the migration settings and mappings to ensure that the controlling areas are correctly defined. Make sure that you are not unintentionally merging controlling areas that should remain distinct.
  
  
  Data Validation: Validate the data in the controlling areas to ensure there are no inconsistencies or errors that could be causing the merge issue.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration or conversion process you are undertaking. There may be specific guidelines or prerequisites that need to be followed.
  
  
  Use SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide solutions or workarounds for known issues.
  
  
  Engage SAP Support: If the issue persists after checking the above points, consider reaching out to SAP Support for assistance. They can provide more detailed insights based on your specific system configuration and migration scenario.
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to investigate the data structures related to controlling areas.
  Migration Tools: Familiarize yourself with the SAP S/4HANA Migration Cockpit or other relevant tools that you are using for the migration process.
  Documentation: Review the SAP Help Portal for detailed documentation on controlling area configuration and data migration processes.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.