xmlhtml-0.1.0.1: test/resources/ibm/invalid/P56/out/ibm56i10.xml
<test> <id1 UniqueName="BC456"></id1> <id2 UName="AC567"></id2> <idrefs reference="EF456 DE355"></idrefs> Negative test for validity constraint of IDREFS. In an attribute decl, values of type IDREFS match the name production but IDREFS value do not match the values assigned to one or more ID attributes somewhere in the XML document </test>