Is it possible to set Prerequisite for an item which users have already launched from their Learning plan
Learning Management System
Yes, you will able to set the pre-requisite for the item but you would need to reassign the course to the users who already have it on their learning plan and users who have started will loose their progress.
Otherwise the pre-requisite set will not affect any users they will still be able to continue the courses assigned and system will not review the pre-requisite.
launched content , KBA , LOD-SF-LMS , SuccessFactors Learning , LOD-SF-LMS-COR , LMS Core - Items, Catalog, Curricula , How To