{{Api Root}}/api/Invoices/one-off-payment 
{
	"PaymentMethod": {
        "IpAddress" : "1.1.1.1",
        "Email" : "[email protected]",
        "PhoneNumber" : "323-555-1234",
		"BillingAddress": {
                    "AddressLine1": "123 Main St.",
                    "City": "Los Angeles",
                    "State": "CA",
                    "PostalCode": "90210",
                    "Country": "USA"
                },
		"BillingFirstName": "John",
		"BillingLastName": "Doe",
        "CreditCard":{
            "PaymentAccountNumber": "2222400010000008",
            "ExpirationDate": "0330",
            "SecurityCode": "123"
        }
	},
	"Invoice": {
		"MerchantInvoiceRefId": "12345",
		"InvoiceLineItems": [
			{
				"InvoiceLineItemId": 0,
				"Name": "One Time Charge",
				"Description": "Test of 1.01",
				"Value": 1.01,
				"ValueType": "Standard"
			}
		]
	}
}
Response 
{
    "invoiceId": 440119,
    "merchantInvoiceRefId": "12345",
    "invoiceStatus": "Paid",
    "invoiceAttemptStatus": "Success",
    "message": "Transaction complete.",
    "subtotal": 1.04,
    "taxAmount": 0.0,
    "total": 1.04
}
Order Processing Channel