@Jake Could you perhaps assist here?
Were you able to find a solution? I think I'm facing the same problem.
Hello Jasmin,
I found an imperfect but working solution :
There is no user interface in Nintex to delete a delegation BUT there is a web service that is capable of doing it as documented here :
https://community.nintex.com/t5/Technical-Issues/Unable-to-Delete-Long-Term-Delegation/ta-p/86831
So I created a Site Workflow with :
One variable that must appear on the start form "ID_Delegation"
A single action : Call a web service : /_vti_bin/NintexWorkflow/Workflow.asmx
Method to be called : "DeleteLongTermDelegationRule"
That method require one input : id (int) -> I put my variable "ID_Delegation"
Then, go to http://SITE/_layouts/15/workflow.aspx?ShowAll=1
Start that site WF but you have to input the ID of the delegation to delete
HOW TO GET THE ID ?
2 methods :
1) You have access to MS SQL Server management Studio, connect to you server SQL,
Database : NintexWorkflowDB
Table : [Delegation]
request should look like that :
SELECT * FROM [NintexWorkflowDB].[dbo].[Delegation]
Check the column [DelegationID]
2) no sql, 100% Sharepoint/Nintex :
Go to :
http://SITE/_layouts/15/NintexWorkflow/UserPreferences.aspx?username=ACTIVEDIRECTORYDOMAIN%5USERLOGINNAME
Check the url of the links shown on the right :
http://SITE/_layouts/15/NintexWorkflow/DelegationEdit.aspx?delegationID=27
you cannot click the link but you have the ID to input in the delete workflow
Then, up to you to recreate a delegation with different users or dates.
http://SITE/_layouts/15/NintexWorkflow/DelegationAdd.aspx
Bonus information :
Site administrators can set up long term delegation for other users if the Global Setting “Site administrators long term delegation” is enabled.
http://CENTRALADMINISTRATION/_admin/NintexWorkflow/TaskSettings.aspx
I hope this will help you and others ...