1. Generate a list of users to be lock and save it into a text file.
2. Open transaction code SU10 and click on Address Data.
3. Choose Execute (F8).
4. Click on User Name column and select Filter to determine criteria values. Click on the Multiple Selection (Yellow arrow icon).
5. Under the Select Single Values, click on Import from Text File (Green colour icon). Choose and upload the text file that you saved earlier.
6. The list from the uploaded text file will appear and choose Transfer
7. Now, you can lock the users by select the lock icon.
