Before: ... <xsd:attribute name="partNum" type="SKU" use="required"/> <xsd:attribute name="weight" type="xsd:decimal"/> <xsd:attribute name="shipBy"> <xsd:simpleType> <xsd:restriction base="xsd:string"> <xsd:enumeration value="air"/> <xsd:enumeration value="land"/> <xsd:enumeration value="any"/> </xsd:restriction> </xsd:simpleType> </xsd:attribute> .... After: <xsd:attributeGroup ref="ItemDelivery"/> ... <xsd:attributeGroup name="ItemDelivery"> <xsd:attribute name="partNum" type="SKU" use="required"/> <xsd:attribute name="weight" type="xsd:decimal"/> <xsd:attribute name="shipBy"> <xsd:simpleType> <xsd:restriction base="xsd:string"> <xsd:enumeration value="air"/> <xsd:enumeration value="land"/> <xsd:enumeration value="any"/> </xsd:restriction> </xsd:simpleType> </xsd:attribute> </xsd:attributeGroup>