Based on the work plan, a criterion of LOCKED in IFO guardian was updated from PRFPMI_LOCKED_WITH_OMC to OBSERVATION_WITHOUT_LINES.
This work doesn't make an SDF issue.

Related scope of Guardian code is shown in Fig.1.
Only is_ifo_locked() function was updated in this work.

When is_ifo_locked() returns True, run() function in LOCKING state returns True and guardian can achieve LOCKED state.
When is_ifo_locked() returns False, ifo_lock_check decorator in the states upstream of LOCKED returns 'LOCKING' and guardian falls down to LOCKING state.
These behaviors were not changed in this work.