How To Fix RSENQ049 - Aggregate &1 being used as source for filling an aggregate

SAP Error Message - Details

• Message type: E = Error

• Message class: RSENQ - Lock Manager

• Message number: 049

• Message text: Aggregate &1 being used as source for filling an aggregate

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSENQ049 - Aggregate &1 being used as source for filling an aggregate ?

  The SAP error message RSENQ049 indicates that an aggregate is being used as a source for filling another aggregate, which is not allowed in SAP BW (Business Warehouse). This error typically arises when there is an attempt to use an aggregate as a data source for another aggregate, which can lead to inconsistencies and performance issues.
  Cause:
  The primary cause of this error is the design of the data model in SAP BW. Aggregates are pre-calculated summaries of data that are used to improve query performance. However, SAP BW does not allow one aggregate to be used as a source for another aggregate because it can lead to ambiguous results and incorrect data aggregation.
  Solution:
  To resolve the RSENQ049 error, you can take the following steps:
  
  
  Check Aggregate Definitions: Review the definitions of the aggregates involved. Ensure that the source of the aggregate is a data source (like a fact table) and not another aggregate.
  
  
  Modify the Data Flow: If you need to create a new aggregate based on existing aggregates, consider modifying the data flow. Instead of using an aggregate as a source, use the underlying fact table or a different data source.
  
  
  Rebuild Aggregates: If necessary, you may need to rebuild the aggregates to ensure they are based on the correct data sources. This may involve deleting the problematic aggregate and creating a new one with the correct source.
  
  
  Check for Dependencies: Ensure that there are no dependencies or references to the aggregate that is causing the error. You may need to adjust or remove these dependencies.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on aggregate design and best practices.
  
  
  Testing: After making changes, test the aggregates to ensure that they are functioning correctly and that the error does not reoccur.
  
  
  Related Information:
  
  SAP BW Aggregates: Aggregates are used to improve query performance by pre-calculating and storing summarized data.
  Data Modeling Best Practices: Follow best practices for data modeling in SAP BW to avoid issues with aggregates and ensure optimal performance.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the RSENQ049 error.
  
  By following these steps, you should be able to resolve the RSENQ049 error and ensure that your aggregates are set up correctly in SAP BW.