Resetting User Passwords
You as administrator can reset passwords of one or many users. Users whose passwords have been reset are asked to change their password the next time they log on. They do not receive a notification e-mail.

Alternatively administrators can change users’ passwords or have a new password generated automatically by changing the user’s password in the user profile or by choosing Automatic Password Generation in the user’s profile. In both of these cases, users receive a notification e-mail containing the new password and are prompted to change their password the next time they log on. E-mail notification must be activated, otherwise the users cannot be notified of their new password.

If you are
using ABAP user management as data source for the User Management Engine, then
see also SAP Note 770133 and
Using Web AS ABAP User
Management as Data Source for the UME.
· You have the appropriate permissions for user administration.
· The user management property ume.logon.security_policy.password_change_allowed is set to TRUE (default value). If it is set to FALSE, resetting a user’s password has no effect. See Security Policy.
...
1. In the user management administration console, choose Search.
2. Search for the appropriate user(s).
3. On the search results page, select the required user(s) by checking the checkboxes next to the user IDs.
4. Choose Reset Password.
5. On the next page, enter a reason for resetting the passwords (optional) and choose Reset.
When the user(s) next log on, they will be asked to change their password. They do not receive a notification mail.
