How To Fix BRAINOLAPAPI156 - Result exceeds the customized size (MDX_STOP_AFTER_COMBINATIONS)

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAINOLAPAPI - Message class for OLAP API

• Message number: 156

• Message text: Result exceeds the customized size (MDX_STOP_AFTER_COMBINATIONS)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BRAINOLAPAPI156 - Result exceeds the customized size (MDX_STOP_AFTER_COMBINATIONS) ?

  The SAP error message BRAINOLAPAPI156 indicates that the result of an OLAP query exceeds the customized size limit set for the query. This is specifically related to the MDX (Multidimensional Expressions) query processing in SAP BW (Business Warehouse) or SAP Analytics.
  Cause:
  The error occurs when the result set of an MDX query exceeds the predefined limit for the number of combinations that can be returned. This limit is controlled by the parameter MDX_STOP_AFTER_COMBINATIONS, which is set to prevent excessive memory usage and performance degradation when processing large datasets.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Increase the Limit:
  
  You can increase the value of the MDX_STOP_AFTER_COMBINATIONS parameter. This can be done in the SAP BW system settings. However, be cautious with this approach, as increasing the limit may lead to performance issues if the result set is too large.
  
  
  
  Optimize the Query:
  
  Review and optimize the MDX query to reduce the number of combinations being returned. This can involve:
  
  Filtering the data more effectively.
  Reducing the number of dimensions or members being queried.
  Aggregating data where possible to minimize the result set size.
  
  
  
  
  
  Use Variables:
  
  Implement variables in your query to allow users to specify criteria that limit the data returned. This can help in managing the size of the result set.
  
  
  
  Check for Unnecessary Dimensions:
  
  Ensure that you are not including unnecessary dimensions in your query that could inflate the result set size.
  
  
  
  Review Data Model:
  
  Sometimes, the underlying data model may need to be reviewed. Ensure that the data model is optimized for the types of queries being run.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support for specific guidance on adjusting the MDX_STOP_AFTER_COMBINATIONS parameter and best practices for MDX queries.
  
  
  
  Related Information:
  
  MDX_STOP_AFTER_COMBINATIONS: This parameter can typically be found in the SAP BW system settings and can be adjusted by an administrator.
  Performance Tuning: Regular performance tuning of queries and data models in SAP BW can help prevent such issues from arising.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates related to this error message.
  
  If the problem persists after trying these solutions, it may be beneficial to consult with your SAP Basis or BW team for further analysis and support.