How To Fix DMCLG386 - Assignment of rules in source and target area is missing or incorrect

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 386

• Message text: Assignment of rules in source and target area is missing or incorrect

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG386 - Assignment of rules in source and target area is missing or incorrect ?

  The SAP error message DMCLG386, which states "Assignment of rules in source and target area is missing or incorrect," typically occurs in the context of data migration or data transfer processes, particularly when using tools like SAP Data Services or SAP Information Steward. This error indicates that there is a mismatch or a missing assignment of transformation rules between the source and target data areas.
  Causes:
  
  Missing Mapping: The transformation rules that define how data should be transferred from the source to the target are not defined or are incomplete.
  Incorrect Configuration: The configuration settings for the data flow may not be set up correctly, leading to an inability to map the source fields to the target fields.
  Data Type Mismatch: There may be a mismatch in data types between the source and target fields, which can prevent proper mapping.
  Rule Assignment Issues: The rules that are supposed to govern the data transformation may not be assigned correctly in the data flow design.
  Changes in Source/Target Structure: If there have been changes in the structure of the source or target data (like added or removed fields), the existing mappings may no longer be valid.
  
  Solutions:
  
  Check Mapping Configuration: Review the mapping configuration in the data flow to ensure that all necessary rules are assigned correctly. Make sure that each source field has a corresponding target field.
  Define Missing Rules: If any transformation rules are missing, define them in the data flow. Ensure that all required mappings are in place.
  Validate Data Types: Ensure that the data types of the source and target fields are compatible. If there are mismatches, adjust the data types accordingly.
  Review Changes: If there have been recent changes to the source or target structures, update the mappings to reflect these changes.
  Test the Data Flow: After making adjustments, test the data flow to ensure that the error is resolved and that data is being transferred correctly.
  
  Related Information:
  
  Documentation: Refer to SAP's official documentation for Data Services or Information Steward for detailed guidance on mapping and transformation rules.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to identify the cause of the DMCLG386 error and implement the necessary solutions to resolve it.