Fast formula compiled but offboarding checklist is not working

Summary:

Fastformula is compiled but doesn't work as eligibility profile for checklist

Content (please ensure you mask any confidential information):

Hello,

We've used below fast formula which is getting compiled but it is not working when attached to checklist as eligibility profile:

DEFAULT for PER_ASG_USER_PERSON_TYPE is 'A'
DEFAULT for PER_LEGAL_EMPLOYER_LEGAL_ENTITY_IDENTIFIER is 'B'
DEFAULT for PER_WORKER_ASSIGNMENT_LEGISLATION_CODE is 'C'
ELIGIBLE = 'N'

IF ((PER_ASG_USER_PERSON_TYPE = 'Employee - Dual Student' OR PER_ASG_USER_PERSON_TYPE = 'Employee - Intern')
AND (PER_LEGAL_EMPLOYER_LEGAL_ENTITY_IDENTIFIER = 'AT00'