attributeGroup needs to appear after an enumeration in XSD

Question

XML standards say that an attributeGroup needs to appear after an enumeration in a restriction. Is this true ?

Answer 1

Yes and no, depends on what you are after.

If you have an restriction with <enumeration> and <attributeGroup> elements, then out of these two <enumeration> needs to appear first. But besides <restriction> <attributeGroup> elements can appear also as child of <attributeGroup> (nested groups), <complexType>, <extension>, <redefine> or <schema> (global groups).