hb_teddy

"all" has only one type of child element, that is "element". So if you put "choice" in "all", there will be an error.

xml schema has no ability, such condition to test.

<xsd:complexType><xsd:sequence> <xsd:element name="info" type="xsd:string" minOccurs="0" maxOccurs="1" /> <xsd:choice> <xsd:element name="error" type="xsd:string" /> <xsd:element name="fileNumber" type="xsd:string" /> </xsd:choice></xsd:sequence></xsd:complexType>hope it is not ugly

define a simpletype at first and use this simpletype to extend the complextype you need<xs:schema ><xs:element name="ELEMENTS"> <xs:complexType> <xs:sequence> <xs:element ref="EL_ONE" /> </xs:sequence> </xs:complexType></xs:element> <xs:simpleType name="ZERO_ONE_Type"> <xs:restriction base="xs:integer"> <xs:minInclusive value="0"/> <xs:maxInclusive value="7"/> </xs:restriction></xs:simpleType><xs:element name="EL_ONE"> <xs:complexType> <xs:simpleContent> <xs:extension base="ZERO_ONE_Type"> <xs:attribute name="id" type="xs:string" /> </xs:extension > </xs:simpleContent> </xs:complexType></xs:element> </xs:schema>hope can help you