Disabling security level 40
You might want to move back to level 30 from level 40 temporarily because you need to test new applications for integrity errors. Or, you might discover you did not test well enough before changing to security level 40.
You can change from security level 40 to level 30 without jeopardizing your resource security. No changes are made to special authorities in user profiles when you move from level 40 to level 30. After you have tested your applications and resolved any errors in the audit journal, you can move back to level 40.
Attention: If you move from level 40 to level 20, some special authorities are added to all user profiles. (See Table 2.) This removes resource security protection.