How To Fix RSDD819 - Check aggregate does not exist. Needs to be created

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD - Message class for data manager

• Message number: 819

• Message text: Check aggregate does not exist. Needs to be created

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD819 - Check aggregate does not exist. Needs to be created ?

  The SAP error message RSDD819, which states "Check aggregate does not exist. Needs to be created," typically occurs in the context of SAP BW (Business Warehouse) when you are trying to execute a query or access data that requires an aggregate that has not yet been created.
  Cause:
  
  Missing Aggregate: The primary cause of this error is that the required aggregate for the InfoProvider (like a cube) has not been created. Aggregates are pre-calculated summaries of data that improve query performance.
  Query Design: The query you are trying to run may be designed to use an aggregate that is not available in the system.
  Data Model Changes: If there have been recent changes to the data model (like adding new characteristics or measures), the existing aggregates may no longer be valid or sufficient.
  
  Solution:
  To resolve the RSDD819 error, you need to create the required aggregate. Here are the steps to do that:
  
  
  Identify the Required Aggregate:
  
  Check the query or the InfoProvider to determine which aggregate is missing. This information is usually provided in the error message or can be inferred from the query design.
  
  
  
  Create the Aggregate:
  
  Go to the SAP BW system.
  Navigate to the InfoProvider (e.g., the InfoCube) for which the aggregate needs to be created.
  Use transaction code RSA1 to access the Data Warehousing Workbench.
  Find the InfoCube in the "Modeling" section.
  Right-click on the InfoCube and select "Manage Aggregates."
  Click on "Create Aggregate" and follow the prompts to define the aggregate. You will need to specify the characteristics and key figures that should be included in the aggregate.
  
  
  
  Activate the Aggregate:
  
  After creating the aggregate, ensure that it is activated. This step is crucial for the aggregate to be usable in queries.
  
  
  
  Test the Query:
  
  Once the aggregate is created and activated, run the query again to see if the error persists.
  
  
  
  Related Information:
  
  Performance Considerations: Aggregates are used to improve query performance by pre-calculating data. However, creating too many aggregates can lead to increased data load times and storage requirements. It's essential to balance the number of aggregates with performance needs.
  Monitoring Aggregates: You can monitor the usage of aggregates and their performance in the SAP BW system to determine if additional aggregates are needed or if existing ones can be optimized.
  Documentation: Refer to SAP Help documentation for more detailed instructions on creating and managing aggregates in SAP BW.
  
  By following these steps, you should be able to resolve the RSDD819 error and improve the performance of your queries in SAP BW.