Message
article-id in sub-article or response should not duplicate an article-id of the parent
article for @pub-id-type "text()"
Rule XPath:
This rule REPORTS an alert when the following is TRUE:
some $parent-id in (ancestor::article/front/article-meta/article-id) satisfies (text()
= $parent-id/text() and @pub-id-type = $parent-id/@pub-id-type)