BeezUpApi.DuplicateProductValueStrategy Enum None (value: "None") SkipAllDuplicateProducts (value: "SkipAllDuplicateProducts") KeepFirstDuplicateProductOnly (value: "KeepFirstDuplicateProductOnly") FailImportationIfAnyDuplicateProduct (value: "FailImportationIfAnyDuplicateProduct")