Mapstruct : Ambiguous mapping methods found for mapping collection element

As @Filip suggested, it is better to do something like that :

RDomain entityToDomain(REntity rEntity)

@Named(value = "useMe")
RDomain entityToDomainLight(REntity rEntity)

@IterableMapping(qualifiedByName = "useMe")
List<RDomain> entitiesToDomains(List<REntity> rEntities)