First remove or modify the relevant assigned permission sets that require the license, and then remove the assigned permission set license.
|Available in: both Salesforce Classic and Lightning Experience|
|Available in: Professional, Enterprise, Performance, Unlimited, and Developer Editions|
|To remove a permission set license:||“Manage Users”|
Identify the permission that requires the permission set license you want to remove.
Make sure that permission isn’t assigned to the user through a permission set. You can do that in one of these ways.
- Remove the permission from the permission sets assigned to the user
- Remove the permission set from the user’s assigned permission sets
From Setup, enter Users in the Quick Find box, then select Users.
Click the name of the user whose permission set license you want to remove.
In the Permission Set License Assignments related list, click Del next to the permission set license that you want to remove, and then click OK.