This is the ValueSet that contains all the codes in BeVSVaccinationConfirmationStatus (https://www.ehealth.fgov.be/standards/fhir/vaccination/ValueSet/be-vs-vaccination-confirmation-status) and BeVSVaccinationConfirmationStatus (https://www.ehealth.fgov.be/standards/fhir/vaccination/ValueSet/be-vs-vaccination-confirmation-status). E.g. what you have to deal with if you get resources containing codes in either of them