How to lockdown a specific TCODE

Scenario: administrator would like to perform maintenance task and would want to temporary block/disable the access of certain TCODE for a specific of time.

Simple steps to disable a TCODE from user access:

1) Execute TCODE: SM01

2) Enter the TCODE to be lock in the text box and click "search" icon key

3) Checklist the "Lock" button and "Save" button

4) Sample error when the TCODE been execute.

5) Perform the similar task to unlock the TCODE later.