I want to update the item permission for an approval workflow with "Set item permission". For this, I save the approver's Accounts to an collection varibale. After this, I use this variable in the update permission item:
Error Message: "No user was found with the specified username 'DOMAIN\siw'. Permissions have not been set for this principal. Error "
Whats the problem?
System: Nintex 2013, SharePoint 2013 On-Premise