| No | Field Name | Field Description | Condition |
| 1 | ver | “100” | M |
| 2 | merchantId | Merchant ID | M |
| 3 | merchantPwd | Merchant password | M |
| 4 | ref | Merchant transaction number (order number) | M |
| 5 | tradeGubun | Transaction type | M |
| 6 | currType | Transaction currency | M |
| 7 | price | Transaction amount | M |