IOS receipt validation error 21002

Question

I\'m trying to use receipt validation with my server side. Everything is ok, but sometimes I see strange: 10 times validation is OK, but on 11 i get 21002 error. I dont know

Answer 1

This is late so you might well have solved this now - but i noticed a typo - you left out a ")" where you cast to a string in the condition == "ok":

if let parseJSON = json {
    if String(parseJSON["status"]! == "ok" {
    //do something