Recommended Practice based on International Guidelines
Birth certificate should be requested to access public services, such as child immunizations and wellness checks, school enrolllment, etc. Absence of a birth certificate should not prevent the child from accessing healthcare, education, or other services. However, if health workers (such as vaccination workers, doctors, nurses) or other public servants see an unregistered child, they can use the opportunity to report the birth or educate the parents about birth registration.
Indonesia
Legal Analysis
Government and private services - including passport, drivers license, taxation number, insurance, land certificates, and other ID documents - require an NIK (National Identity Number), which is issued at birth registration. Therefore, services are tied to birth registration.
Law Source