How To Fix DMCLG091 - Field name &1 is entered twice

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 091

• Message text: Field name &1 is entered twice

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 DMCLG091 - Field name &1 is entered twice ?

  The SAP error message DMCLG091, which states "Field name &1 is entered twice," typically occurs in the context of data management or data loading processes, particularly when working with Data Management or Data Services in SAP. This error indicates that a field name has been defined more than once in a particular context, which is not allowed.
  Cause:
  
  Duplicate Field Definition: The most common cause of this error is that the same field name has been defined multiple times in a data structure, mapping, or transformation. This can happen if you are importing or defining fields manually and accidentally enter the same field name more than once.
  Incorrect Data Mapping: If you are mapping fields from a source to a target and mistakenly map the same source field to multiple target fields, this error may arise.
  Configuration Issues: Sometimes, configuration settings or data models may inadvertently lead to duplicate field definitions.
  
  Solution:
  
  Check Field Definitions: Review the data structure, mapping, or transformation where the error is occurring. Look for any duplicate field names and remove or rename the duplicates.
  Validate Data Mapping: If you are working with data mapping, ensure that each source field is mapped to a unique target field. Adjust the mappings as necessary to eliminate duplicates.
  Review Configuration: If the error persists, check the overall configuration of the data model or data service to ensure that there are no conflicting definitions.
  Testing: After making changes, test the data load or transformation process again to ensure that the error has been resolved.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Data Services or the specific module you are working with for more detailed guidance on field definitions and mappings.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Error Logs: Check the error logs for additional context or details that may help identify where the duplicate field definition is occurring.
  
  By following these steps, you should be able to identify and resolve the cause of the DMCLG091 error in your SAP environment.