KB43765 - How to delete custom expressions from the auth server library

Legacy custom expressions can be deleted by doing the following:

When using an LDAP server (which provides direct access to the server catalog):

1. Login as admin
2. Navigate to Authentication > Auth Servers and select the LDAP auth server.
3. Click on Server Catalog.
4. Click on Expressions.  
5. In the dropdown menu, click on the custom expression to delete.  
6. Click Delete.

When using any other auth server type that supports custom expressions (but no direct access to the server catalog), the following steps need to be taken:

1. Login as admin
2. Navigate to Users > User Realms and select the realm.
3. Go to the Role Mapping tab.
4. Select the rule with the custom expressions.  
5. Click on Expressions to open the expression library. 
6. From the dropdown click to select the expression to delete.  
7. Click Delete.