Message
Issue XML should be available so that rules comparing article metadata to Issue XML can be enforced
Rule XPath:
This rule ASSERTS the following, raising an alert if FALSE:
let $IssueFile := local:issue-xml(., $IssueFileXml, $IssueFileUri) returnexists($IssueFile) or (front/article-meta/volume = '0' and front/article-meta/issue
= '0')