How To Fix CNV_20306_CHECK028 - No implicit controlling area merge found

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20306_CHECK - Message Class for package CNV_20306_CHECK

• Message number: 028

• Message text: No implicit controlling area merge found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20306_CHECK028 - No implicit controlling area merge found ?

  The SAP error message CNV_20306_CHECK028 with the description "No implicit controlling area merge found" typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system could not find a valid implicit merge of controlling areas, which is necessary for the migration of controlling area-related data.
  Cause:
  
  
  Controlling Area Configuration: The error often arises when there are multiple controlling areas in the source system that do not have a defined relationship or merge path. This can happen if the controlling areas are not set up correctly or if there are inconsistencies in the configuration.
  
  
  Data Migration Settings: The migration settings may not be correctly configured to handle the merging of controlling areas, leading to the system being unable to find a suitable merge path.
  
  
  Inconsistent Data: There may be inconsistencies in the data related to controlling areas, such as missing or incorrect entries in the configuration tables.
  
  
  Solution:
  
  
  Check Controlling Area Configuration: Review the configuration of the controlling areas in the source system. Ensure that they are set up correctly and that there is a logical path for merging them if necessary.
  
  
  Define Implicit Merges: If applicable, define implicit merges for the controlling areas in the migration settings. This may involve adjusting the migration parameters to ensure that the system can recognize how to handle the controlling areas.
  
  
  Data Consistency Check: Perform a consistency check on the controlling area data. Look for any missing or incorrect entries that could be causing the issue. Correct any inconsistencies found.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool you are using. There may be specific guidelines or prerequisites for handling controlling areas during migration.
  
  
  Engage SAP Support: If the issue persists after checking the configuration and data, 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:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling controlling area merges during migration.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into handling controlling areas and related configurations.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.