How To Fix WM666 - If you have performance problems, limit the material selection

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 666

• Message text: If you have performance problems, limit the material selection

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WM666 - If you have performance problems, limit the material selection ?

  The SAP error message WM666 typically indicates that there are performance issues related to the material selection process in the Warehouse Management (WM) module. This message is a warning that suggests the system is experiencing slow performance due to the volume of materials being processed or selected.
  Cause:
  
  High Volume of Materials: The system is trying to process a large number of materials, which can lead to performance degradation.
  Inefficient Selection Criteria: The selection criteria used for retrieving materials may not be optimized, leading to unnecessary data being processed.
  System Configuration: The configuration of the warehouse management system may not be optimized for the current workload or data volume.
  Database Performance: Underlying database performance issues can also contribute to slow material selection.
  
  Solution:
  
  
  Limit Material Selection: 
  
  Use more specific selection criteria to narrow down the number of materials being processed. This can include filtering by material type, storage location, or other relevant attributes.
  Consider using selection variants or predefined filters to streamline the selection process.
  
  
  
  Optimize Warehouse Processes:
  
  Review and optimize warehouse processes to ensure that they are efficient and do not overload the system.
  Implement batch processing where possible to handle large volumes of data more effectively.
  
  
  
  System Configuration:
  
  Review the configuration settings in the WM module to ensure they are optimized for your specific business processes and data volume.
  Consider consulting with an SAP expert to identify potential configuration improvements.
  
  
  
  Database Optimization:
  
  Work with your IT team to ensure that the database is properly indexed and optimized for performance.
  Regularly perform database maintenance tasks such as updating statistics and reorganizing tables.
  
  
  
  Monitor System Performance:
  
  Use SAP transaction codes like ST03N (Workload Analysis) and ST04 (Database Performance Analysis) to monitor system performance and identify bottlenecks.
  Analyze the performance metrics to determine if there are specific areas that require attention.
  
  
  
  User Training:
  
  Train users on how to effectively use selection criteria to minimize the number of materials being processed at one time.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address performance issues related to WM or provide patches and updates.
  SAP Community: Engage with the SAP Community for insights and shared experiences from other users who may have faced similar issues.
  Performance Tuning Guides: Refer to SAP's performance tuning guides for WM and database optimization best practices.
  
  By addressing the underlying causes and implementing the suggested solutions, you can mitigate the performance issues associated with the WM666 error message.