Person change causes life event not triggering for Terminations

Summary:

We have a "Person Change Causes Life Event" fast formula associated with our termination trigger with the below conditions. We have been seeing that it is not working randomly on a few employees.

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below is the FF design.
DEFAULT FOR PER_PER_ENTERPRISE_TERMINATION_ACTION_CODE is 'NA'

l_eff_date=GET_CONTEXT(EFFECTIVE_DATE,TO_DATE('1951/01/01 00:00:00'))

L_RETURN = 'N'
l_term_action = UPPER(PER_PER_ENTERPRISE_TERMINATION_ACTION_CODE)