How To Fix SWN162 - Optimized delta selection must not be activated

SAP Error Message - Details

• Message type: E = Error

• Message class: SWN - WF Notif: Messages

• Message number: 162

• Message text: Optimized delta selection must not be activated

What causes this issue?

The system does not fulfill the prerequisites of the optimized delta
selection.
It has the following prerequisites:
Index 003 of table SWN_NOT
The conversion program RSWN_SET_APP_OBJ_KEY_HASH has run successfully.
The APP_OBJ_KEY_HASH column is filled for all lines of table SWN_NOTIF.
If these prerequisites are not met, you cannot activate the optimized
delta selection, because otherwise the UWL and Duet can no longer be
supplied with data (work items) and e-mail notifications can no longer
be sent.

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?

For more information, see SAP Note 1526484.

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 SWN162 - Optimized delta selection must not be activated ?

  The SAP error message SWN162, which states "Optimized delta selection must not be activated," typically occurs in the context of the SAP Workflow Notification (SWN) configuration. This error is related to the settings for the delta selection in the workflow notification configuration.
  Cause:
  The error arises when the "Optimized delta selection" option is activated in the configuration of the workflow notifications, but the system is not set up to support this feature. This can happen due to various reasons, such as:
  
  Incompatibility with the current system version: The feature may not be supported in the version of SAP you are using.
  Incorrect configuration: The settings in the workflow notification configuration may not be properly aligned with the requirements for optimized delta selection.
  Missing prerequisites: Certain prerequisites or configurations may not be met, leading to this error.
  
  Solution:
  To resolve the SWN162 error, you can follow these steps:
  
  
  Check Configuration:
  
  Go to the transaction code SWN1 (Workflow Notification Configuration).
  Review the settings for the notification configuration and ensure that "Optimized delta selection" is not activated if your system does not support it.
  
  
  
  Deactivate Optimized Delta Selection:
  
  If you find that the "Optimized delta selection" is activated, deactivate it. This can usually be done in the configuration settings of the workflow notifications.
  
  
  
  Review System Version:
  
  Ensure that your SAP system version supports the optimized delta selection feature. If it does not, you may need to upgrade your system or adjust your configuration accordingly.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation or notes related to workflow notifications and delta selection for any specific requirements or additional configuration steps that may be necessary.
  
  
  
  Check for SAP Notes:
  
  Look for any relevant SAP Notes that may address this issue. You can search the SAP Support Portal for notes related to SWN162 or optimized delta selection.
  
  
  
  Testing:
  
  After making the necessary changes, test the workflow notification functionality to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SWN1: Workflow Notification Configuration
  SWN_SELS: Selection of Workflow Notifications
  
  
  SAP Notes: Always check for the latest SAP Notes that may provide additional insights or fixes related to this error.
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the SWN162 error and ensure that your workflow notifications are functioning correctly.