event-type attribute must be on allowed list of event types ("received" "revised" "accepted" "xml-converted" "xml-created" "digitized" "accepted-manuscript" "ahead-of-issue" "build-issue-online" "final" "tagger" "corrected" "retracted" "provenance")
This rule ASSERTS the following, raising an alert if FALSE:
@event-type = ('received', 'revised', 'accepted', 'xml-converted', 'xml-created',
'digitized', 'accepted-manuscript', 'ahead-of-issue', 'build-issue-online', 'final',
'tagger', 'corrected', 'retracted', 'provenance')