How To Fix /EACC/DMB026 - DataSource &1 has already been created

/EACC/DMB026 - Overview

• Message type: E = Error

• Message class: /EACC/DMB -

• Message number: 026

• Message text: DataSource &1 has already been created

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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/EACC/DMB026 - Details

• The SAP error message /EACC/DMB026 DataSource &1 has already been created typically occurs in the context of SAP Data Warehousing or SAP BW (Business Warehouse) when you attempt to create a DataSource that already exists in the system. This can happen during the process of data extraction or when setting up data flows.
  
  Cause:
  The error indicates that the DataSource you are trying to create (denoted by &1, which will be replaced by the actual DataSource name) already exists in the system. This can happen due to:
  
  An attempt to create a DataSource with the same name as an existing one.
  A previous configuration or setup that was not properly deleted or modified.
  A duplicate entry in the system due to a copy-paste error or similar.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing DataSources:
  
  Go to the DataSource management area in SAP BW (transaction code RSA1).
  Navigate to the relevant InfoSource or DataSource area