GS1 XSD generator

[karnuffel]

I am busy on a project and we are using some of the older GS1 XML standards. Although most of the XSD files are provided we still need to build one XSD file using them. Ive managed to get a fair amount done but I get stuck with the abstract classes for example. Its also time consuming to build the new XSD file, import it only to find something didnt work or a field should be added.

Any tools that I can use to import XSD files and reference them to build a new XSD? Something that will give me an idea of the resulting XSD as well?