I'm trying to validate a XML with a given XSD. But I'm continuously getting the following error.
cvc-elt.4.2: Cannot resolve 'MyType' to a type definition for element 'Test'.
XML
<notifications xmlns="http://soap.sforce.com/2005/09/outbound">
<Notification>
<Test xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="MyType">
<Id>a2L1g000000OzM7EAK</Id>
</Test>
</Notification>
</notifications>
XSD
<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://soap.sforce.com/2005/09/outbound" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="notifications">
<xs:complexType>
<xs:sequence>
<xs:element name="Notification">
<xs:complexType>
<xs:sequence>
<xs:element name="Test">
<xs:complexType>
<xs:sequence>
<xs:element name="Id" type="xs:string" />
</xs:sequence>
<xs:anyAttribute processContents="skip"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
CodePudding user response：
The type given by xsi:type has to be derivable from the type specified in the XSD, yet your XSD doesn't even define a MyType type.
Globally define a MyType type and make sure it's derivable from the type of the Test element.
See also
- How to restrict the value of an XML element using xsi:type in XSD?
- Use datatype directly with in XML
Update per OP comment:
Can you kindly let me know how my XSD needs to be updated? I really don't care about this type attribute. So simply want to make the XSD validation a success. Please note that I can't change the XML structure as it's coming from an external system.
This XSD would be valid against the unchanged XML:
<?xml version="1.0" encoding="utf-8" ?>
<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
attributeFormDefault="unqualified"
elementFormDefault="qualified"
targetNamespace="http://soap.sforce.com/2005/09/outbound"
xmlns:ob="http://soap.sforce.com/2005/09/outbound"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="notifications">
<xs:complexType>
<xs:sequence>
<xs:element name="Notification">
<xs:complexType>
<xs:sequence>
<xs:element name="Test" type="ob:MyType"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="MyType">
<xs:sequence>
<xs:element name="Id" type="xs:string" />
</xs:sequence>
<xs:anyAttribute processContents="skip"/>
</xs:complexType>
</xs:schema>
Note that the above XSD renders the xsi:type attribute in the XML redundant. An example XSD which demonstrates use of xsi:type is as follows:
<?xml version="1.0" encoding="utf-8" ?>
<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
attributeFormDefault="unqualified"
elementFormDefault="qualified"
targetNamespace="http://soap.sforce.com/2005/09/outbound"
xmlns:ob="http://soap.sforce.com/2005/09/outbound"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="notifications">
<xs:complexType>
<xs:sequence>
<xs:element name="Notification">
<xs:complexType>
<xs:sequence>
<xs:element name="Test" type="ob:TestType"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="TestType">
<xs:sequence>
<xs:element name="Id" type="xs:string" />
</xs:sequence>
<xs:anyAttribute processContents="skip"/>
</xs:complexType>
<xs:complexType name="MyType">
<xs:complexContent>
<xs:extension base="ob:TestType"/>
</xs:complexContent>
</xs:complexType>
</xs:schema>
With this second XSD, the xsi:type attribute in the XML causes the type of the Test element to change from its default of TestType. Here too the effect is inconsequential, but one could expand the MyType to differ from TestType. The constraint is that it MyType must still derive from TestType.