How To Fix BRAIN028 - Query contains too many selection elements

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 028

• Message text: Query contains too many selection elements

What causes this issue?

The number of selection elements (number of selection elements for
structure 1 * number of selection elements for structure 2) has to be
less than or equal to &V1&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Adjust the query.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN028 - Query contains too many selection elements ?

  The SAP error message BRAIN028 indicates that a query contains too many selection elements. This typically occurs in SAP BW (Business Warehouse) when a query is created with an excessive number of selection criteria, which can lead to performance issues or exceed system limitations.
  Cause:
  
  Excessive Selection Criteria: The query has more selection elements than the system can handle. Each selection element adds complexity to the query execution.
  System Limitations: SAP BW has predefined limits on the number of selection criteria that can be used in a query. This limit can vary based on system configuration and version.
  Inefficient Query Design: The query may not be optimally designed, leading to unnecessary complexity.
  
  Solution:
  
  Reduce Selection Elements: Review the query and try to reduce the number of selection criteria. Focus on the most critical filters that are necessary for your analysis.
  Use Hierarchies: Instead of using multiple selection criteria, consider using hierarchies or ranges that can encapsulate multiple values within a single selection element.
  Aggregate Data: If possible, aggregate data at a higher level to reduce the need for detailed selection criteria.
  Split the Query: If the query is too complex, consider splitting it into multiple simpler queries that can be executed separately.
  Check Query Design: Review the query design for any unnecessary selections or filters that can be removed or simplified.
  Consult Documentation: Refer to SAP documentation or support for specific limits related to your version of SAP BW.
  
  Related Information:
  
  Performance Considerations: Excessive selection criteria can lead to performance degradation. It's essential to balance the need for detailed data with the system's ability to process it efficiently.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or updates related to this error message.
  Query Monitoring: Use transaction codes like RSRT (Query Monitor) to analyze the performance of your queries and identify bottlenecks.
  User Training: Ensure that users creating queries are trained on best practices for query design to avoid hitting system limits.
  
  By addressing the number of selection elements and optimizing the query design, you should be able to resolve the BRAIN028 error and improve the performance of your queries in SAP BW.