Note: Enabling service-access mode requires a one-time password to be generated, this one-time password are only good for 60 minutes.
1) From the ips command line run the following command:
ips{} service-access enable
2) Contact TAC and provide the device "Serial" and the "Salt" numbers generated by the command mentioned in step (1) above.
3) TAC will provide you a one-time password for you to use with the service account.
4) If you are already logged into an account at the serial console logout first (…otherwise just duplicate your SSH session).
ips{} logout
5) Log back in to the system with the "service" account:
Login as: “service”
Password: one-time password