How To Fix DS356 - A sort key can only be chosen once

DS356 - Overview

• Message type: E = Error

• Message class: DS - Messages for Editing Text Elements in ABAP Programs

• Message number: 356

• Message text: A sort key can only be chosen once

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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DS356 - Details

• The SAP error message DS356, which states "A sort key can only be chosen once," typically occurs in the context of data processing or reporting, particularly when dealing with data extraction or transformation processes in SAP BW (Business Warehouse) or similar environments. This error indicates that a sort key has been assigned multiple times in a context where it should only be assigned once.
  
  Cause:
  
  
  Duplicate Sort Key Assignment: The most common cause of this error is that the same sort key has been assigned to multiple fields or dimensions in a query or data model. In SAP BW, sort keys are used to define the order in which data is processed or displayed, and each sort key must be unique within its context.
  
  
  Incorrect Query Design: If you are designing a query in SAP BW and you inadvertently select the same sort key for different characteristics or measures, this error will be