How To Fix CNV20551163 - Deletion criterion &1 for table &2 is inefficient; change criterion

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20551 - message for package 20551 (company code delete)

• Message number: 163

• Message text: Deletion criterion &1 for table &2 is inefficient; change criterion

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20551163 - Deletion criterion &1 for table &2 is inefficient; change criterion ?

  The SAP error message CNV20551163 indicates that the deletion criterion specified for a particular table is inefficient. This typically occurs during data migration or data cleansing processes, where the system is trying to delete records based on certain criteria, but the criteria used are not optimal for performance.
  Cause:
  
  Inefficient Deletion Criteria: The deletion criteria may involve complex conditions or may not utilize indexed fields, leading to slow performance.
  Large Data Volume: If the table contains a large volume of data, inefficient criteria can lead to long processing times or timeouts.
  Non-Selective Conditions: The criteria may be too broad, resulting in a large number of records being evaluated unnecessarily.
  
  Solution:
  
  
  Review and Optimize Criteria:
  
  Analyze the deletion criteria being used and ensure that they are as specific as possible.
  Use indexed fields in the WHERE clause of the deletion statement to improve performance.
  Avoid using functions or calculations on indexed fields in the criteria, as this can prevent the use of the index.
  
  
  
  Test with Smaller Data Sets:
  
  Before running the deletion on the entire dataset, test the criteria on a smaller subset of data to evaluate performance.
  
  
  
  Use Batch Processing:
  
  If deleting a large number of records, consider breaking the deletion into smaller batches to reduce the load on the system.
  
  
  
  Consult SAP Documentation:
  
  Refer to SAP notes or documentation related to the specific table and deletion process for any recommended practices.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists, consider reaching out to SAP support for assistance, especially if this is part of a larger migration or upgrade project.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary) to analyze the table structure and indexes.
  Performance Analysis: Use transaction ST05 (SQL Trace) to analyze the performance of the deletion operation and identify bottlenecks.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide guidance on optimizing deletion processes.
  
  By addressing the inefficiencies in the deletion criteria, you should be able to resolve the error and improve the performance of your data deletion operations in SAP.