Disabling security level 50
After changing to security level 50, you might find you need to move back to security level 30 or 40 temporarily. For example, you might need to test new applications for integrity errors; or you might discover integrity problems that did not appear at lower security levels.
You can change from security level 50 to level 30 or 40 without jeopardizing your resource security. No changes are made to special authorities in user profiles when you move from level 50 to level 30 or 40. After you have tested your applications and resolved any errors in the audit journal, you can move back to level 50.
Attention: If you move from level 50 to level 20, some special authorities are added to all user profiles. This removes resource security protection.