XML Validation: 'No matching global declaration available for the validation root'

Question

I've seen several different posts about this issue, but none of the suggested solutions have solved my problem, which seems to indicate some fundamental misunderstanding on my behalf. I am under the impression there is a name-spacing issue between my XML and XSD, but I'm not sure how to solve it?

I'm getting the following error whilst validating my XML:

Element '{http://www.w3.org/2001/XMLSchema}schema': No matching global declaration available for the validation root., line 1`

XML:

<?xml version="1.0" encoding="UTF-8"?>
<DOCUMENT_FILE
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="path\to\my.xsd">
    <DOCUMENT>
        <BRANCH_NUMBER>num</BRANCH_NUMBER>
    </DOCUMENT>
</DOCUMENT_FILE>

XSD:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" version="1.0">
  <xsd:element name="DOCUMENT_FILE">
    <xsd:complexType>
      <xsd:sequence minOccurs="1" maxOccurs="1">
        <xsd:element name="DOCUMENT" minOccurs="1" maxOccurs="unbounded">
          <xsd:complexType>
            <xsd:sequence minOccurs="1" maxOccurs="1">
              <xsd:element name="BRANCH_NUMBER" minOccurs="1" maxOccurs="1" type="xsd:string"/>
            </xsd:sequence>
          </xsd:complexType>
        </xsd:element>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
</xsd:schema>

kjhughes · Accepted Answer · 2021-12-29T13:38:11.817

Your XML is valid against your XSD. (Your fundamental understanding is sound.) There's likely just a minor problem in how you're specifying the path to the XSD.

XSD in same directory:

Replace

xsi:noNamespaceSchemaLocation="path\to\my.xsd">

with

xsi:noNamespaceSchemaLocation="my.xsd">

XSD in another relatively specified, local directory:

xsi:noNamespaceSchemaLocation="path/to/my.xsd">

XSD in another absolutely specified, local directory:

xsi:noNamespaceSchemaLocation="file:///path/to/my.xsd">

XSD in a remote directory:

xsi:noNamespaceSchemaLocation="https://example.com/path/to/my.xsd">

XML Validation: 'No matching global declaration available for the validation root'

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