There were also some instances of things like a parent having a child node and the child having a name sub-node instead of a name attribute on the child, where the parent had a name attribute. I realize there are no inviolable rules about when to use an attribute versus a tag, but what I ran into was inconsistency within a single response object. My point above was that the envelope is a standard, but the contents can be poorly designed and is domain-specific--the same is also true for REST.