Вот код и ошибка
orderDict ["MID"] = "eXpITP11198467212711"
//Merchant configuration in the order object
orderDict["CHANNEL_ID"] = "WAP"
orderDict["INDUSTRY_TYPE_ID"] = "Retail109"
orderDict["WEBSITE"] = "eXpITPWAP"
//Order configuration in the order object
orderDict["TXN_AMOUNT"] = "5"
orderDict["ORDER_ID"] = "1233"
orderDict["REQUEST_TYPE"] = "DEFAULT"
orderDict["CUST_ID"] = "1213"
orderDict["REQUEST_TYPE"] = "DEFAULT"
orderDict["CALLBACK_URL"] =
"9z2JoKHj85TpRxJifYIKuNz5hOoAR9g6ryefLigxtXX74oquWZpBxd / О + 9r8blDNj / 3aD5E1ZKSqPNJ5lRR1lqqKw7rGvdKIspOnaXTLvmE ="
orderDict ["CUST_ID"] = "
https://securegw.paytm.in/theia/paytmCallback?ORDER_ID=1233"