По переходу операции в конечный статус на адрес, переденный в запросе в поле notification.url отправляется нотификация.

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs7NA6ot9a53nxGYelM89
o1imFac04hED3sS8cwzFxi2rxUNQXl2tEiWIHzGy2sEFLDfeN2lvEVCONl7pXlDP
fpFPBNPy6zfSRMq32t319MDOkykBRTRE4GDlU+MPm/u/UOGuHSaFLKKKXVZVyk6o
9K+hI9UfVE5FNjF04vWBrgcnwWQ9+hqNE9EhqxELoQdhbcUz3PnBkjWRKlBXnUBo
9HrboTaRUr+YkyTh6Kh/afQHreKXy8yA0arTT4mpeb5PL06g0B9Ejn4m+wHPN8DW
feY8U8QImoaDT5n+ngxMpqIXv2kokPBATlpno3uj9fKcxivqvEbtNrAA5wRM17Bq
WwIDAQAB
-----END PUBLIC KEY-----

Пример уведомления (версия 2)

POST /test/emptycallback HTTP/1.1
W1-Signature: APlbhz3H0FxiD2W9fD4IQBRCDvOyJh5mwYbrNDGWpowyJBIqNy1s9k1qievoJvm14ddoM1t8RAlwWbLbDQDNECoXJgzup9PffoL/KgSnsSuxxUPHwXhk8Dit21HrUI1GiRY56h2eRjk1njE/75h7RDmR5cGCSDA5fosFUXWbTYakw0Aywl9WFTkblRooKEbSNuGuyQ6gEJKNGd1L2+668KHuCLaWgIaaKFgJMxMt9xrlSKAkKlWpHgk7FyQSkSxit6Fvnh0F96Ja6Jrar4dTsyRqkaEgfgvuCsY++VI2dCWOQRF/OIMPEalgpMzMM4CMqd7ofmkD61r2dDEAsj7d1A==
Content-Type: application/json
Host: payment.flexo.systems
Content-Length: 805

{
  "id" : "1-6-a-34",
  "type" : "REFUND",
  "status" : "SUCCEEDED",
  "externalId" : "ext#42-1775227387068",
  "amounts" : {
    "amount" : {
      "amount" : 5.0,
      "currency" : "USD"
    },
    "payerAmount" : {
      "amount" : 7.5,
      "currency" : "USD"
    },
    "merchantFee" : {
      "amount" : 0.0,
      "currency" : "USD"
    },
    "payerFee" : {
      "amount" : 2.5,
      "currency" : "USD"
    },
    "settlementAmount" : {
      "amount" : -5.0,
      "currency" : "USD"
    }
  },
  "registeredMethods" : [ ],
  "merchantParameters" : {
    "param1" : "anything you want for callback",
    "param2" : null,
    "param3" : null
  },
  "transactions" : [ {
    "type" : "REFUND",
    "status" : "SUCCEEDED",
    "maskedPan" : "411111XXXXXX1111",
    "rejectReason" : null
  } ]
}
HTTP/1.1 404 Not Found
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers

Привер уведомления (версия 3)

POST /test/emptycallback HTTP/1.1
W1-Signature: sCfYZiUh4UTx+UMuyOYKoSqUVBJF7GPooO5/Lpt2D/lvmNZqM5JZPCo7OqpyuFGdEfTueB71bNrCDj2OjkAuRgMJHY/CDhzbLgFWszLXMkWNUapbD8jOz2lWRa8khGwzAzOKnDyrnfPjQRJlB8eMwUsnevWeGiTswOarm0dJLAfxu+YsjewZLja/KXpL6G70SRVXYG7bGqHtjL7y5T2j8C+JcacVsHWiat7281uhPXgNLKi9jtQkGPELb57LuJAnzGnStuIE4repj3Mli35tW8oZTGox0ExmEEuBOXqFPxcW4ytoarZx1JKWeOPtH7ouWO6sjCVCEqG3M4lxHMK2cg==
Content-Type: application/json
Host: payment.flexo.systems
Content-Length: 928

{
  "id" : "1-1-a-20",
  "type" : "PURCHASE",
  "status" : "SUCCEEDED",
  "externalId" : "ext#25-1775227365886",
  "chargedAmounts" : {
    "amount" : {
      "amount" : 10.57,
      "currency" : "USD"
    },
    "payerAmount" : {
      "amount" : 10.57,
      "currency" : "USD"
    },
    "merchantFee" : {
      "amount" : 0.0,
      "currency" : "USD"
    },
    "payerFee" : {
      "amount" : 0.0,
      "currency" : "USD"
    },
    "settlementAmount" : {
      "amount" : 10.57,
      "currency" : "USD"
    }
  },
  "registeredMethods" : [ {
    "entity" : {
      "id" : "payoutToken-411111-something-1111"
    },
    "type" : "PAYOUT_TOKEN"
  } ],
  "merchantParameters" : {
    "param1" : "anything you want for callback",
    "param2" : null,
    "param3" : null
  },
  "transactions" : [ {
    "type" : "PURCHASE",
    "status" : "SUCCEEDED",
    "maskedPan" : "411111XXXXXX1111",
    "rejectReason" : null
  } ]
}
HTTP/1.1 404 Not Found
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers