I am using checkout basic giving customers the option to pay with two cards.
I use the SDK of PHP v 0.5.2 and I am set to listen to the topic payments of notifications IPN .
/ collections / notifications / [ID] ? access_token = [ACCESS_TOKEN]
I received the notification, I checked the status of the payment and it was approved, then I delivered the product, but I have not implemented the logic of verifying if the amount of the payment is the full amount of the sale. I need to know if there is any attribute in the payment that indicates that it is a partial payment to check directly that variable, or what would be the correct way to implement this functionality?