00 — Undefined⧉

<?xml version="1.0" encoding="UTF-8"?>
<Product xmlns="http://ns.editeur.org/onix/3.0/reference">
  <CollateralDetail>
    <TextContent>
      <TextType>00</TextType>
    </TextContent>
  </CollateralDetail>
</Product>

• Introduced in Issue 0 (or earlier)