[
  {
    "amount": 1,
    "count": 2,
    "unit": "шт.",
    "name": "USB"
  },
  {
    "amount": 10,
    "count": 1,
    "unit": "шт.",
    "name": "Телефон"
  }
]

{
  "airLine": "S4", // абревиатура авиакомпании, max длина 4 символа.
  "ticketNumber": "ACSFD12354SA", // номер билета, max длина 15 символов. 
  "passengerName": "John Doe", // имя пассажира, max длина 29 символов.
  "flightNumber": "742", // номер рейса, max длина 5 символов.
  "originCity": "DP", // код города/аэропорта вылета, max длина 5 символов.
  "destinationCity": "NY", // код города/аэропорта назначения, max длина 5 символов.
  "departureDate": "100514" // дата вылета в формате YYMMDD, max длина 6 символов.
}

[
  {
    "public_key": "i000000001",
    "amount": 1,
    "commission_payer": "sender",
    "server_url": "https://server1/callback"
  },
  {
    "public_key": "i000000002",
    "amount": 2,
    "commission_payer": "receiver",
    "server_url": "https://server2/callback"
  }
]

#!/bin/bash
PUBLIC_KEY='your_public_key'
PRIVATE_KEY='your_private_key'
API_URL='https://www.liqpay.com/api/request'
JSON="{ 
	\"action\" : \"refund\",
    \"version\" : 3,
    \"public_key\" : \"${PUBLIC_KEY}\", 
    \"order_id\" : \"order_id_1\"
}"
# DATA is besa64 encode result from JSON string
DATA=$(echo -n ${JSON} | base64)
# SIGNATURE is base64 encode result from sha1 binary hash from concatenate string ${PRIVATE_KEY}${DATA}${PRIVATE_KEY}
SIGNATURE=$(echo -n "${PRIVATE_KEY}${DATA}${PRIVATE_KEY}" | openssl dgst -binary -sha1 | base64)
# REQ is json response from liqpay
REQ=$(curl --silent -XPOST ${API_URL} --data-urlencode data="${DATA}" --data-urlencode signature="${SIGNATURE}")
echo "Result: ${REQ}"

$liqpay = new LiqPay($public_key, $private_key);
$res = $liqpay->api("request", array(
'action'        => 'refund',
'version'       => '3',
'order_id'      => 'order_id_1'
));

HashMap params = new HashMap();
params.put("action", "refund");
params.put("version", "3");
params.put("order_id", "order_id_1");

LiqPay liqpay = new LiqPay(PUBLIC_KEY, PRIVATE_KEY);
HashMap res = liqpay.api("request", params);		
System.out.println(res.get("status"));

from liqpay import LiqPay

liqpay = LiqPay(public_key, private_key)
res = liqpay.api("request", {
"action"        : "refund",
"version"       : "3",
"order_id"      : "order_id_1"
})

liqpay = Liqpay::Liqpay.new(
:public_key  => 'public_key',
:private_key => 'private_key'
)
res = liqpay.api("request", {
:action        => "refund",
:version       => "3",
:order_id      => "order_id_1"
})

LiqPay = liqpay:init(PublicKey, PrivateKey),
Res = liqpay:api("request", [
{<<"action">>, <<"refund">>},
{<<"version">>, <<"3">>},
{<<"order_id">>, <<"order_id_1">>}
], LiqPay)

var LiqPay = require('liqpay');
var liqpay = new LiqPay(public_key, private_key);
liqpay.api("request", {
"action"   : "refund",
"version"  : "3",
"order_id" : "order_id_1"
}, function( json ){
console.log( json.status );
});

my $liqpay = Liqpay->new($public_key,$private_key);
my $res = $liqpay->api("request",
{
'action'        => 'refund',
'version'       => '3',
'order_id'      => 'order_id_1'
}
);

	<form name="MPIform" action='${mpi_req_url}' method="POST">
		 <input type="hidden" name="PaReq" value='${mpi_req_pareq}'>
		 <input type="hidden" name="MD" value='${mpi_req_md}'>
		 <input type="hidden" name="TermUrl" value='${TermUrl}'>
	</form>
	

{
"action": "pay",
"status": "success",
"payment_id": 28334,
"version": 3,
"type": "buy",
"public_key": "i0000111111,
"acq_id": 414963,
"order_id": "order_id_1",
"liqpay_order_id": "4387u1447344892013983",
"description": "description text",
"sender_phone": "380950000001",
"sender_card_mask2": "473119*34",
"sender_card_bank": "pb",
"sender_card_country": 804,
"ip": "8.8.8.8",
"amount": 1,
"currency": "USD",
"sender_commission": 0.0,
"receiver_commission": 0.0,
"agent_commission": 0.0,
"amount_debit": 1,
"amount_credit": 1,
"commission_debit": 0.0,
"commission_credit": 0.0,
"currency_debit": "USD",
"currency_credit": "USD",
"sender_bonus": 0.0,
"amount_bonus": 0.0,
"is_3ds": true
}