How To Fix CNV_DMC_MC_EXCEPTION218 - Source structure is mapped to a target structure; cannot be read-only

CNV_DMC_MC_EXCEPTION218 - Overview

• Message type: E = Error

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

• Message number: 218

• Message text: Source structure is mapped to a target structure; cannot be read-only

Self-Explanatory Message

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CNV_DMC_MC_EXCEPTION218 - Details

• The SAP error message CNV_DMC_MC_EXCEPTION218 typically occurs during data migration processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that there is an issue with the mapping of source and target structures in the data migration process. Specifically, it suggests that the source structure is mapped to a target structure that is set to read-only, which prevents the system from writing data to it.
  
  Cause:
  
  Read-Only Target Structure: The target structure in the migration process is configured as read-only, which means that it cannot accept any data from the source structure.
  Incorrect Mapping: There may be an incorrect mapping configuration between the source and target structures, leading to this error.
  Authorization Issues: The user executing the migration may not have the necessary permissions to write to the target structure.
  Technical Constraints: Certain technical constraints or settings in the system may prevent writing to the target structure.
  
  
  Solution:
  
  
  Check Target Structure