properties

A string map of event-specific data that you might choose to record. For example, if a user rates a movie on your site, other than movie ID (itemId) and rating (eventValue) , you might also send the number of movie ratings made by the user.

Each item in the map consists of a key-value pair. For example,

{"numberOfRatings": "12"}

The keys use camel case names that match the fields in the Item interactions dataset's schema. In the above example, the numberOfRatings would match the 'NUMBER_OF_RATINGS' field defined in the Item interactions dataset's schema.

The following can't be included as a keyword for properties (case insensitive).

• userId

• sessionId

• eventType

• timestamp

• recommendationId

• impression