There are a few duplicates in the AS dependency tree. - com.sun.xml.ws:jaxws-rt - com.sun.xml.bind:jaxb-xjc - com.sun.xml.stream.buffer:streambuffer These are duplicated by our old naming convention for sun jars witch looks like sun-project (for example sun-jaxb). Tomorrow I will go through the AS dependencies (the tree generated from build/pom.xml) and remove the duplicates and also try to switch anything using the old groupId to a dependency using the Maven standard groupid (com.sun.project). Please let me know if you think this will cause problems.