SKAdNetwork: updateConversionValue(_:)

An unsigned 6-bit value (>=0 and <=63).
The app or the ad network determineds the meaning of the value.
The default value is 0.

invalid conversion values cause the method to fail, and the conversion to fail to register

• The method will register the attribution by generating an install notification
  • the cryptographically signed data that confirms that a user installed and launched this app as a result of an ad
• The method enables the app to provide and update a conversion value

The 24-hour timer restarts each time the app calls this method with a conversion value greater than the previous value

When the timer expires, the conversion value is final and subsequent calls to updateConversionValue(_:) have no effec

The device sends the install notification postback to the ad network’s URL within 0-24 hours after the timer expires

• 같은 날 이루어진 conversion 이라도 어떤 주기에, 얼마나 많은 conversion 이 이루어졌느냐에 따라서 postback 시간이 달라진다
• postback 시간이 매우 불규칙하다 (?)

Only postbacks with an ad attribution can contain a conversion value. non-winning postbacks don't include a conversion value.