TDM opt-out in ONIX records

Dear members, 

Some of you will be interested to know that the ONIX for Books metadata language now specifies a way to express a TDM opt-out in ONIX records. 

ONIX records are sent from book and ebook distributors to retailers, and, therefore, can trigger the presence of a TDMRep property on the Web page that displays book information and ebook downloads. 

The information is specified in Onix codelist 145 - Usage type (onix-codelists.io) <https://onix-codelists.io/codelist/145>.

Here is a sample:

<EpubUsageConstraint>
<EpubUsageType>11</EpubUsageType>
<EpubUsageStatus>03</EpubUsageStatus>
</EpubUsageConstraint>


Note: There is no way to embed a TDM Policy URL in ONIX. 

Best regards
Laurent Le Meur