Message
There should be at most one @subj-group-type="heading" in the article XML
Rule XPath:
This rule ASSERTS the following, raising an alert if FALSE:
count(article-categories/subj-group[@subj-group-type = 'heading']) le 1There should be at most one @subj-group-type="heading" in the article XML
This rule ASSERTS the following, raising an alert if FALSE:
count(article-categories/subj-group[@subj-group-type = 'heading']) le 1