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Google updated the 'register your interest' form, where online retailers and libraries can apply for participation in the Book Action Google Search feature.
Google added support for the identifier 'JP e-code' as an accepted PropertyValue.
The PropertyValue entity is used as the identifier property, which is a recommended property for Book (Edition).
For LibrarySystem, one of the required properties is 'additionalProperty.value', which must use one of 6 specific values. Google updated the documentation to replace 'national' with 'government.'
Significant changes made to the Book documentation to provide guidelines for building and validating a data feed.
