How To Fix CNV_DMC_MC_EXCEPTION206 - For target structure &1, the mapping type æSplitÆ occurs more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

• Message number: 206

• Message text: For target structure &1, the mapping type æSplitÆ occurs more than once

What causes this issue?

When more than one source structure is mapped to a target structure,
only one of the source structures can have the mapping type ?Split?.

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_DMC_MC_EXCEPTION206 - For target structure &1, the mapping type æSplitÆ occurs more than once ?

  The SAP error message CNV_DMC_MC_EXCEPTION206 indicates that there is an issue with the mapping configuration in the Data Migration Cockpit (DMC) during a data migration process. Specifically, the error states that for the target structure specified (denoted as &1), the mapping type "Split" occurs more than once. This typically means that the system has detected multiple mappings that attempt to split the same source field into multiple target fields, which is not allowed.
  Cause:
  
  Duplicate Mapping Entries: The most common cause of this error is that there are multiple entries in the mapping configuration that attempt to split the same source field into different target fields.
  Incorrect Mapping Logic: The mapping logic may have been incorrectly defined, leading to multiple split operations on the same source field.
  Configuration Errors: There may be errors in the configuration of the data migration project, such as incorrect definitions of the target structure or mapping types.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Review Mapping Configuration:
  
  Go to the mapping configuration in the Data Migration Cockpit.
  Check the target structure specified in the error message.
  Look for any duplicate "Split" mappings for the same source field.
  
  
  
  Consolidate Split Mappings:
  
  If you find multiple mappings that split the same source field, consolidate them into a single mapping that correctly defines how the source field should be split into the target fields.
  Ensure that each source field is only mapped once to avoid conflicts.
  
  
  
  Test the Mapping:
  
  After making changes to the mapping configuration, test the mapping to ensure that it works as expected without generating the error.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the Data Migration Cockpit for detailed guidance on mapping configurations and best practices.
  
  
  
  Seek Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support or consulting with a colleague who has experience with the Data Migration Cockpit.
  
  
  
  Related Information:
  
  Data Migration Cockpit (DMC): A tool provided by SAP to facilitate data migration from legacy systems to SAP S/4HANA or other SAP solutions.
  Mapping Types: Understanding the different mapping types (e.g., "Split", "Merge", "Direct") is crucial for configuring data migrations correctly.
  Error Logs: Check the error logs for additional context or related errors that may provide further insight into the issue.
  
  By following these steps, you should be able to identify and resolve the cause of the CNV_DMC_MC_EXCEPTION206 error in your SAP data migration project.