NMTOKEN type in XSD prevents using of properties in switchyard.xml, because NMTOKEN does not allow using of $,

what are needed for properties, see http://www.schemacentral.com/sc/xsd/t-xsd_NMTOKEN.html. I have found this in JCA binding, but core module also contains some XSDs, DTDs containing NMTOKEN. See ResourceAdapter and Endpoint in http://goo.gl/EmTdKn. NMTOKEN should be replaced with something else or properties should be evaluated before XSD validation.