Why have I received a push notification or record using latest.json that says a record has been updated but still has the same data?
There are some fields in a record that are sent only when a filter is provided while making a request to the Validic API. Validic sends a push notification or updates the "last_updated" field when those fields are updated. If no other fields for that record change, it will appear that the data is the same if the appropriate filter is not provided when making the request.
Most commonly, the "show_water=1" filter will reveal the updated field - "water" in this case. Other filters that reveal fields within a record that could potentially change are "show_validated=1" and "show_activity_category=1", though these generally will not be updated after the record is created.