How To Fix BRAIN851 - Please select an aggregate.

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 851

• Message text: Please select an aggregate.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN851 - Please select an aggregate. ?

  The SAP error message BRAIN851, which states "Please select an aggregate," typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when a user attempts to execute a query or report that requires an aggregate but none has been selected.
  Cause:
  
  Missing Aggregate: The most common cause of this error is that the query or report you are trying to run does not have an aggregate defined or selected. Aggregates are pre-calculated summaries of data that improve query performance.
  Incorrect Query Design: The query may be designed in such a way that it does not reference any existing aggregates.
  Data Model Changes: Changes in the underlying data model, such as the deletion of aggregates or changes in InfoProviders, can lead to this error.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the aggregates.
  
  Solution:
  
  Select an Aggregate: When prompted with the error, check if you can select an appropriate aggregate from the available options. This can usually be done in the query designer or report settings.
  Create an Aggregate: If no aggregates are available, you may need to create one. This involves:
  
  Going to the Aggregates section in the SAP BW modeling tools.
  Defining the aggregate based on the required characteristics and key figures.
  Activating the aggregate after creation.
  
  
  Check Query Design: Review the query design to ensure that it is correctly set up to utilize aggregates. Make sure that the InfoProvider used in the query has aggregates defined.
  Review Data Model: If there have been recent changes to the data model, verify that the aggregates are still valid and have not been deleted or modified.
  Authorization Check: Ensure that the user has the necessary authorizations to access the aggregates. This may involve checking roles and permissions in the SAP system.
  
  Related Information:
  
  SAP BW Documentation: Refer to the official SAP BW documentation for detailed information on aggregates and how to manage them.
  SAP Community: The SAP Community forums can be a valuable resource for troubleshooting specific issues related to SAP BW and BI.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) for managing aggregates and InfoProviders.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW administrator for further assistance.