- Entrant's name – a discrepancy here requires a fingerprint test to clear or allow detention
- Passport number – a discrepancy here allows the inspector to detain the entrant
- Up-to-date polio vaccination – polio needs to be listed in the certificate and the vaccination must be valid. A vaccine expires if it is older than three years compared to the in-game date. An expired vaccination is pointed out by highlighting the date in the booth and the date on the certificate. Either of these discrepancies requires a denial.
A certificate of vaccination can list up to three vaccines out of eleven possibilities: