shopId, scId, ShopPassword should be registered in "config.php" or write to them every time there xD
* - required fields
scId * - Counterparty's payment form ID.
shopId * - Counterparty’s ID.
customerNumber * - Payer ID in the Counterparty IS. The ID can be the payer’s contract number, login, etc.
Sum * - Order total.

Payment purse; paymentType=PC
Payment with any credit card; paymentType=AC
Payment from the mobile phone account; paymentType=MC
Payment via cash and cash terminals; paymentType=GP
Payment of the purse in system WebMoney; paymentType=WM
Online Payment through Sberbank; paymentType=SB
Online Payment through AlphaClick; paymentType=AB