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If you need help, contact biblio@booknetcanada.ca. Whatever version of ONIX you use, you should try to support the most current code list.
ONIX 3.0 Revision
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3
ONIX 3.0 is the new version on ONIX with better support for Digital Products and capable of a much higher degree of accuracy to support truly international data exchange. There have been a couple of major structural changes since it's inital release in 2009 and any implementer should ensure that they are using ONIX 3.0.23.
In North America actual use of ONIX 3.0 is still limited and most data exchange remains using ONIX 2.1. The time for change has now come though, at the minimum would be to for all publishers and data recipients to familiarize themselves with the changes.
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Current ONIX Is Defined By:
Version 2.1 Revision 02 or 03 (04 is largely about changes for Japan)
Code Lists Issue 32Issue 34 (ONIX_BookProduct_Codelists_Issue_3234_Changes.pdf)
BISAC Subject Code list 2015 edition and Regional Themes
The overview of ONIX for Books at the Editeur website.
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