How To Fix CNV_DMC_MC_EXCEPTION102 - Data element &1 already added

CNV_DMC_MC_EXCEPTION102 - Overview

• Message type: E = Error

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

• Message number: 102

• Message text: Data element &1 already added

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION102 - Data element &1 already added ?

  The SAP error message CNV_DMC_MC_EXCEPTION102 with the description "Data element &1 already added" typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that there is an attempt to add a data element that has already been included in the migration project or mapping.
  
  Cause:
  
  Duplicate Data Element: The most common cause of this error is that the data element specified (represented by &1) has already been added to the mapping or transformation logic in the migration project.
  Incorrect Mapping Configuration: There may be a misconfiguration in the mapping settings where the same data element is being referenced multiple times.
  Data Model Issues: The underlying data model may have inconsistencies or duplications that lead to this error.
  
  
  Solution:
  
  Check Mapping Configuration: Review the mapping configuration in the Data Migration Cockpit. Ensure that the data element in question is not being added multiple times.