How To Fix CNV_DMC_MC_EXCEPTION026 - A field rule with this name already exists at migration object level

CNV_DMC_MC_EXCEPTION026 - Overview

• Message type: E = Error

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

• Message number: 026

• Message text: A field rule with this name already exists at migration object level

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION026 - A field rule with this name already exists at migration object level ?

  The SAP error message CNV_DMC_MC_EXCEPTION026 indicates that there is a conflict due to a field rule that already exists at the migration object level during a data migration process using the SAP Data Migration Cockpit (DMC). This typically occurs when you are trying to create or modify a field rule that has the same name as an existing one.
  
  Cause:
  
  Duplicate Field Rule: The most common cause of this error is that you are attempting to create a new field rule with a name that is already in use within the same migration object.
  
  Configuration Issues: There may be issues in the configuration of the migration object or the data migration project that lead to this conflict.
  Multiple Migration Projects: If you are working with multiple migration projects, there might be overlapping field rule names.
  
  
  Solution:
  
  Check Existing Field Rules: Review the existing field rules in the migration object to identify if a rule with the