In schemas/SDMXCommon.xsd and in schemas/SDMXCommonReferences.xsd remove "MeasureDimension" from: "DimensionTypeType", "ObjectTypeCodelistType", "ComponentTypeCodelistType", "DataStructureComponentTypeCodelistType", "DimensionTypeCodelistType", "ObjectTypeListType".
Also remove "MeasureDimensionReferenceType", "MeasureDimensionRefType", "MeasureDimension" (empty type).
In schemas/SDMXCommon.xsd and in schemas/SDMXCommonReferences.xsd remove "MeasureDimension" from: "DimensionTypeType", "ObjectTypeCodelistType", "ComponentTypeCodelistType", "DataStructureComponentTypeCodelistType", "DimensionTypeCodelistType", "ObjectTypeListType".
Also remove "MeasureDimensionReferenceType", "MeasureDimensionRefType", "MeasureDimension" (empty type).