in src/main/java/org/openvasp/client/model/NaturalPersonId.java [35:40]
public void validate(@NonNull final VaspMessage source) {
// whitepaper sections 7.10.1 and 7.11.1, rule 5)
if (null == natIdCountry && (null == natIdIssuer || natIdIssuer.isEmpty())) {
throw new VaspValidationException(source, "Either [natid_country] or [natid_issuer] or both must be present");
}
}