How To Fix RSDD105 - Only select one aggregate

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD - Message class for data manager

• Message number: 105

• Message text: Only select one aggregate

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD105 - Only select one aggregate ?

  The SAP error message RSDD105, which states "Only select one aggregate," typically occurs in the context of SAP BW (Business Warehouse) when you are trying to execute a query that involves multiple aggregates, but the system only allows the selection of one aggregate at a time.
  Cause:
  This error is usually caused by the following scenarios:
  
  
  Multiple Aggregates Selected: The query or report you are trying to run is configured to use multiple aggregates, but the system is designed to work with only one aggregate at a time for the specific query context.
  
  
  Query Design Issues: The query might be incorrectly designed or configured in the BEx Query Designer, leading to the selection of multiple aggregates.
  
  
  Performance Optimization: SAP BW uses aggregates to optimize query performance. If the query is set to use multiple aggregates, it can lead to performance issues, which is why the system restricts it to one.
  
  
  Solution:
  To resolve the RSDD105 error, you can take the following steps:
  
  
  Check Query Design:
  
  Open the query in the BEx Query Designer.
  Review the aggregates that are being used in the query.
  Ensure that only one aggregate is selected for the query execution.
  
  
  
  Modify Aggregate Settings:
  
  If you need to use multiple aggregates for different scenarios, consider creating separate queries for each aggregate.
  Alternatively, you can modify the existing aggregate to include all necessary data, if feasible.
  
  
  
  Use the Right Aggregate:
  
  If you have multiple aggregates available, ensure that you are selecting the most appropriate one for your query requirements.
  
  
  
  Test the Query:
  
  After making changes, test the query to ensure that it runs without errors.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed guidance on aggregates and query design.
  
  
  
  Related Information:
  
  Aggregates in SAP BW: Aggregates are pre-calculated summaries of data that improve query performance by reducing the amount of data that needs to be processed at runtime.
  BEx Query Designer: This is the tool used to create and modify queries in SAP BW. Understanding how to use this tool effectively is crucial for resolving issues related to queries and aggregates.
  Performance Considerations: When designing queries, always consider the performance implications of using multiple aggregates and aim to optimize the query for better performance.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP BW administrator or a technical consultant who can provide further assistance.