The specified value of the attribute does not match its 'VD' declaration.
Duplicate specification for attribute 'A' of element 'E'.
The specified value of attribute 'A' does not match its 'VD' declaration.
The specified value of attribute 'A' does not match its fixed declared value.
The required attribute 'A' has not been specified.
Specified attribute #1 for element 'E' has not been given any name.
Attribute 'A' is not declared for element 'E'.
where A is an attribute name, E an element name, and VD an attribute-value-declaration.