This is the ValueSet that contains all the codes in JDV_J20_ChampActivite_ROR (https://mos.esante.gouv.fr/NOS/JDV_J20-ChampActivite-ROR/FHIR/JDV-J20-ChampActivite-ROR) and JDV_J20_ChampActivite_ROR (https://mos.esante.gouv.fr/NOS/JDV_J20-ChampActivite-ROR/FHIR/JDV-J20-ChampActivite-ROR). E.g. what you have to deal with if you get resources containing codes in either of them