How To Fix CNV_20306_CHECK016 - Controlling area merge into target &1 is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20306_CHECK - Message Class for package CNV_20306_CHECK

• Message number: 016

• Message text: Controlling area merge into target &1 is not supported

What causes this issue?

A merge of controlling areas was detected. If you want to merge
controlling areas you have to use the transformation solution
Controlling Area Merge.
You cannot run the transformation solution Controlling Area Rename
because certain prerequisites have not been met. Please change your
mapping accordingly.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20306_CHECK016 - Controlling area merge into target &1 is not supported ?

  The SAP error message CNV_20306_CHECK016 indicates that there is an issue with merging 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 Landscape Transformation (SLT) tool.
  Cause:
  The error message suggests that the system has detected an attempt to merge controlling areas that are not compatible or supported. This can occur due to several reasons, including:
  
  
  Incompatible Controlling Areas: The controlling areas being merged may have different settings, such as different currencies, fiscal year variants, or other configuration differences that prevent them from being merged.
  
  
  Data Inconsistencies: There may be inconsistencies in the data associated with the controlling areas, such as different cost center structures or different profit center assignments.
  
  
  Configuration Issues: The configuration of the controlling areas may not align with the requirements for merging, such as different allocation methods or different settings for internal orders.
  
  
  Solution:
  To resolve the error CNV_20306_CHECK016, consider the following steps:
  
  
  Review Controlling Area Settings: Check the configuration of the controlling areas involved in the merge. Ensure that they have compatible settings, such as the same currency, fiscal year variant, and other relevant parameters.
  
  
  Data Consistency Check: Perform a thorough check of the data associated with the controlling areas. Look for inconsistencies in cost centers, profit centers, and any other related master data.
  
  
  Adjust Configuration: If necessary, adjust the configuration of the controlling areas to ensure they meet the requirements for merging. This may involve standardizing settings across the controlling areas.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are undertaking. There may be specific guidelines or prerequisites for merging controlling areas.
  
  
  Seek SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide additional insights or solutions based on the specific context of your system.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on merging controlling areas.
  Migration Tools: Familiarize yourself with the tools and processes involved in your migration or conversion project, such as the SAP S/4HANA Migration Cockpit or SAP Landscape Transformation (SLT).
  Best Practices: Review best practices for data migration and controlling area configuration to avoid similar issues in the future.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to successfully merge the controlling areas.