Certain kinds of values in the `<AutoValue>` element (to be deprecated, see #20), can cause the [comp2schema stylesheet](https://github.com/clarin-eric/cmdi-toolkit/blob/cmdi-1.2.3/src/main/resources/toolkit/xslt/comp2schema.xsl) to generate an invalid XSD. @menzowindhouwer could you provide a more detailed description of this issue?