How To Fix KN168 - This selection may result in long runtimes

SAP Error Message - Details

• Message type: E = Error

• Message class: KN - Reporting for Costing

• Message number: 168

• Message text: This selection may result in long runtimes

What causes this issue?

The limits you entered in the selection screen do not limit the
selection. This may result in a long selection time.

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?

If possible, limit at least one of the following selection criteria:
sold-to party
material
sales order number

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KN168 - This selection may result in long runtimes ?

  The SAP error message KN168 ("This selection may result in long runtimes") is a warning rather than a critical error. It typically occurs when a user attempts to execute a report or transaction that involves a large dataset or complex calculations, which could lead to extended processing times. This message is intended to alert users that the operation they are about to perform may take longer than usual, allowing them to reconsider or adjust their selection criteria.
  Causes:
  
  Large Data Volume: The selection criteria may encompass a vast number of records, leading to longer processing times.
  Complex Queries: The report or transaction may involve complex calculations or joins that require significant processing power.
  Inefficient Selection Criteria: The filters or parameters set for the report may not be optimized, causing the system to process more data than necessary.
  System Performance: The overall performance of the SAP system may be affected by other concurrent processes or insufficient resources.
  
  Solutions:
  
  Refine Selection Criteria: Narrow down the selection criteria to limit the number of records processed. Use specific filters to reduce the dataset.
  Use Indexes: Ensure that the database tables involved in the query are properly indexed to improve retrieval times.
  Schedule Reports: If the report is not time-sensitive, consider scheduling it to run during off-peak hours when system load is lower.
  Optimize Queries: Review and optimize the underlying queries or logic used in the report to enhance performance.
  Monitor System Performance: Check the system performance and resource utilization. If necessary, work with your IT team to address any performance bottlenecks.
  Use Background Processing: If the report is expected to take a long time, consider running it in the background, allowing you to continue working on other tasks.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., SE38 for report execution, ST22 for dumps, SM37 for job monitoring) to manage and troubleshoot reports effectively.
  SAP Notes: Check SAP Notes for any known issues or performance tips related to specific reports or transactions.
  User Training: Ensure that users are trained on best practices for running reports, including how to set appropriate selection criteria.
  
  By addressing the causes and implementing the suggested solutions, you can mitigate the impact of the KN168 warning and improve the efficiency of your SAP reporting processes.