How To Fix /EACC/DMEXTR002 - DataSource &1 is not unique

/EACC/DMEXTR002 - Overview

• Message type: E = Error

• Message class: /EACC/DMEXTR -

• Message number: 002

• Message text: DataSource &1 is not unique

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 /EACC/DMEXTR002 - DataSource &1 is not unique ?

  The SAP error message /EACC/DMEXTR002 DataSource &1 is not unique typically occurs in the context of data extraction processes, particularly when working with SAP Data Services or SAP BW (Business Warehouse). This error indicates that the system has encountered multiple entries for the specified DataSource, which should be unique.
  
  Cause:
  
  Duplicate DataSource Entries: The most common cause of this error is that there are multiple entries for the same DataSource in the system. This can happen due to incorrect configuration or data entry.
  Incorrect DataSource Configuration: If the DataSource is not properly configured or if there are inconsistencies in the metadata, it can lead to this error.
  Transport Issues: If DataSources were transported from one system to another, it might lead to duplicates if not handled correctly.
  
  
  Solution:
  
  
  Check for Duplicates:
  
  Go to the DataSource maintenance transaction (e.g., RSA1 for BW) and check if there are multiple entries for the DataSource in question.
  If duplicates are found, you