How To Fix SWN161 - Optimized delta mechanism must not be activated

SAP Error Message - Details

• Message type: E = Error

• Message class: SWN - WF Notif: Messages

• Message number: 161

• Message text: Optimized delta mechanism must not be activated

What causes this issue?

The system does not meet the prerequisites for the optimized delta
mechanism for the Universal Worklist and Duet.
The optimized delta mechanism for UWL and Duet has the following
prerequisites:
Index 002 of table SWN_NOT
The conversion program RSWN_SET_RECIPIENT_HASH2 has run successfully.
The RECIPIENT_HASH2 column is filled for all lines of table SWN_NOTIF.
If these prerequisites are not met, you cannot activate the optimized
delta mechanism, because the UWL and Duet can no longer be supplied with
data (work items).

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 1459177.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.