
First, make sure your client is set to modifiable mode. Then, open transaction code /n/UI2/FLP_SYS_CONF. Enter values for these two parameters:
- SESSION_TIMEOUT_INTERVAL_IN_MINUTES
- The time in minutes until a user is logged out automatically when inactive. Disable with -1.
- SESSION_TIMEOUT_REMINDER_IN_MINUTES
- The time in minutes before session timeout when the keep alive popup is displayed. Disable with 0.

Note:
- You can use transaction /n/UI2/FLP_CUS_CONF to set these two parameters for your current client.
- SAP Note 2955208 – How to set automatic Fiori Launchpad Sign-Out



