How To Fix BRAIN268 - Characteristic &1 must only exist once in exception aggregation

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 268

• Message text: Characteristic &1 must only exist once in exception aggregation

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN268 - Characteristic &1 must only exist once in exception aggregation ?

  The SAP error message BRAIN268 indicates that a characteristic is being used multiple times in an exception aggregation, which is not allowed. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when defining queries or aggregations that involve exception handling.
  Cause:
  The error arises when:
  
  A characteristic is included more than once in the exception aggregation definition.
  The aggregation logic is incorrectly set up, leading to a conflict in how the data is being processed.
  
  Solution:
  To resolve the BRAIN268 error, you can follow these steps:
  
  
  Review the Exception Aggregation:
  
  Go to the query definition where the error is occurring.
  Check the exception aggregation settings for the relevant characteristic.
  
  
  
  Remove Duplicate Characteristics:
  
  Ensure that the characteristic mentioned in the error message (&1) is only included once in the exception aggregation.
  If you find it listed multiple times, remove the duplicates.
  
  
  
  Check Aggregation Logic:
  
  Verify that the aggregation logic is correctly defined and that it aligns with your reporting requirements.
  If necessary, redefine the aggregation to ensure it meets your needs without duplicating characteristics.
  
  
  
  Test the Query:
  
  After making the changes, execute the query again to ensure that the error has been resolved.
  
  
  
  Consult Documentation:
  
  If you are unsure about how to set up exception aggregations, refer to the SAP BW or HANA documentation for guidelines on defining exception aggregations correctly.
  
  
  
  Related Information:
  
  Exception Aggregation: This is a feature in SAP BW that allows you to define how certain characteristics should be aggregated differently from the standard aggregation. It is useful for handling exceptions in data reporting.
  Characteristics: In SAP BW, characteristics are attributes or fields that describe data, such as customer ID, product ID, etc.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or fixes provided by SAP.
  
  By following these steps, you should be able to resolve the BRAIN268 error and successfully configure your exception aggregation in SAP.