No matching global declaration available for the validation root

Question

Background

Validate an XML document using a schema.

Problem

The simplest form of the problem is shown in two files.

XML Document

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Answer 1

In my practice, I got the No matching global declaration available for the validation root in two cases:

• If XSD does not contain an explained in @aravind-r-yarram's answer.

• If in XML does not contain an xmlns attribute. In such case adding the xmlns will help:

  
      ...