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https://issues.apache.org/jira/browse/VALIDATOR-447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16619401#comment-16619401
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Alex commented on VALIDATOR-447:
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https://github.com/apache/commons-validator/pull/16
> ISBN style numbers outside ISBN range returning true for isValid
> ----------------------------------------------------------------
>
> Key: VALIDATOR-447
> URL: https://issues.apache.org/jira/browse/VALIDATOR-447
> Project: Commons Validator
> Issue Type: Improvement
> Components: Routines
> Reporter: Alex
> Priority: Major
> Labels: validators
> Attachments: RangeMessage.xml
>
>
> All 13 digit EANs with the 979 prefix are validating as ISBNs
> (ISBNValidator). There are 2 issues with this.
> # 979-0 prefixed numbers are allocated to the ISMN agency and represent
> music works. [https://www.ismn-international.org/whatis.html]
> # 979-[2-9] are unassigned at present, that is they have not yet been
> allocated to a country agency (or another authority).
> see attached xml (from
> [www.isbn-international.org/export_rangemessage.xml|http://www.isbn-international.org/export_rangemessage.xml]
> [^RangeMessage.xml] ) for the current valid ranges for ISBN
> and
> [https://en.wikipedia.org/wiki/List_of_ISBN_identifier_groups#Identifiers_of_the_979-_prefix]
> An example unassigned 'ISBN' is 9792222222223
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