How To Fix CNV_DMC_SIN399 - Production version &1 already exists. Material is &2, Plant is &3

CNV_DMC_SIN399 - Overview

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 399

• Message text: Production version &1 already exists. Material is &2, Plant is &3

Self-Explanatory Message

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CNV_DMC_SIN399 - Details

• The SAP error message CNV_DMC_SIN399 indicates that there is an attempt to create or modify a production version for a material in a specific plant, but a production version with the same identifier already exists. This error typically arises during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit or similar tools.
  
  Cause:
  
  Duplicate Production Version: The primary cause of this error is that the production version you are trying to create already exists for the specified material and plant combination.
  Data Migration Issues: If you are migrating data from another system or performing a mass upload, there may be duplicate entries in the source data.
  Incorrect Mapping: The mapping of production versions during the migration process may not be set up correctly, leading to attempts to create existing versions.
  
  
  Solution:
  
  
  Check Existing Production Versions:
  
  Use transaction code C202 (or navigate to the relevant area in the SAP GUI) to check the existing