How To Fix RSR_EXPLAIN015 - Read mode &1 taken over from query

SAP Error Message - Details

• Message type: E = Error

• Message class: RSR_EXPLAIN - Explain Key Figures

• Message number: 015

• Message text: Read mode &1 taken over from query

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSR_EXPLAIN015 - Read mode &1 taken over from query ?

  The SAP error message RSR_EXPLAIN015 typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the execution of a query in the Query Designer or when trying to analyze the performance of a query using the Query Monitor. The message indicates that the read mode specified in the query is being overridden or taken over by another mode, which can lead to unexpected behavior or performance issues.
  Cause:
  
  Query Configuration: The query might be configured to use a specific read mode (e.g., "Display," "Data Preview," etc.), but due to certain settings or conditions, the system defaults to another read mode.
  Data Source Issues: The underlying data source (InfoProvider) may not support the specified read mode, leading to a fallback to a default mode.
  Performance Optimization: The system may automatically switch to a different read mode for performance reasons, especially if the query is complex or if there are large volumes of data involved.
  Authorization Issues: Sometimes, the user’s authorization settings may restrict access to certain data, prompting the system to change the read mode.
  
  Solution:
  
  Check Query Settings: Review the query settings in the Query Designer to ensure that the read mode is correctly configured and supported by the underlying data source.
  Validate Data Source: Ensure that the InfoProvider or data source used in the query is functioning correctly and supports the desired read mode.
  Performance Tuning: If the query is complex, consider simplifying it or optimizing it for better performance. This may involve reducing the number of key figures, filters, or characteristics used in the query.
  Authorization Check: Verify that the user has the necessary authorizations to access the data in the specified read mode. Adjust roles and permissions as needed.
  SAP Notes: Check for any relevant SAP Notes or updates that may address this specific error message or provide additional guidance.
  
  Related Information:
  
  SAP BW Documentation: Refer to the official SAP BW documentation for detailed information on query performance, read modes, and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSRT (Query Monitor) and RSRQ (Query Designer) for testing and analyzing queries.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.