xsi:type is not applied to root element

Validating the attached sample using "saxprint -n -f -s test.xml" reports

Error at file c:\testcase\ivan.xml, line 4, char 45
Message: no declaration found for element 'p'

even if the schema contains the 'p' element. However, if the root element lists xsi:type after the xsi:noNamespaceSchemaLocation attribute, the sample works.