I am developing an iPhone app, which I am integrating with PayPal.I did it successfully using PayPal library. I am testing it on sandbox mode. When I transfer money from one account to the other account, it displays a message send to server for verification.Is there a real need to store this PayPal transaction id and other details on our server?
PayPal proof of payment - is there a need to store it at our server?
ios;iphone;objective c;payment