Does SKAdNetwork require a value for the conversion-value parameter?

The conversion-value parameter is not required. This value is updated via the updateConversionValue(_:) method (if you are using Branch's built-in SKAdNetwork functionality, our SDK calls this method automatically on your behalf), and if this method is not called, the conversion-value value in the SKAdNetwork postback will simply not be set.

Note that the conversion-value parameter will only be provided in the SKAdNetwork postback if it passes Apple's secret privacy thresholds.