LPX-00111 invalid string "string" (not a Nmtoken)

Question

Hi
I am not Oracle savvy, but I am asking this question on behalf of another group that are having problems using Oracle XML to parse an XML document that my system has generated.
As part of my DTD, I have the line, which, by the way, is similar to other lines, reads as follows:
<!ATTLIST eligibleCode rule (E-T | E-NT | NE-T | NE-NT ) #FIXED 'E-T' >
The XML document and DTD parse fine using Tibco Turbo XML, Xerces Java and C++ Parsers so I think that it is correct XML. However under the Oracle XML implementation, they get the following error which appears to be when parsing the DTD itself:
LPX-00111 invalid string "string" (not a Nmtoken)
Cause: Validity Constraint 3.3.1 failed:
Given thing is not a Nmtoken
Action: Correct the document.
Strangle enough, the string "string" does not appear in the DTD or XML document itself.
Does nyone know how compatible Oracle XML is with things like this and what work around we may need to perform to get Oracle to correctly parse the DTD.
Many thanks
Ian

Answer 1

<!ATTLIST eligibleCode rule (E-T | E-NT | NE-T | NE-NT ) #FIXED 'E-T' >
^^^^^^^^^^^^
Update: We removed the #FIXED 'E-T' from the DTD and replaced it with #REQUIRED and the DTD now loads further but fails in a similar place.
We are having thoughts that Oracle is not correctly interpreting attributes or attribute definitions that contain a '-' sign.
Any thoughts
Thanks
Ian