Financial transactions

Attention. This is an old version of the API. Switch to the Yandex.Checkout API.

Using MWS, the merchant can make refunds, confirm and cancel deferred payments, and repeat bank card payments (if the Payer agrees). Not all requests may be available to a particular merchant. This depends on how this protocol is implemented and the conditions of the agreement with Yandex.Money.

Interaction format

Server address for calling operations

Test server:

Real server:

Request format

Requests are send over the HTTP 1.1 protocol using the POST method.

Format for passing parameters in the request:

  • Each parameter is passed in {key}={value} format in the body of the POST request.
  • MIME type: application/x-www-form-urlencoded.
  • Encoding: UTF-8.
Response format

The store returns the result of executing the request as an XML document in the body of the response to the HTTP request. Possible HTTP response codes are listed in the References.

The document is formed according to the XML 1.0 (Fifth Edition) standard:

  • The names of elements and attributes are case-sensitive.
  • MIME type: application/xml.
  • Encoding: UTF-8.

General response parameters

Yandex.Checkout responses to all types of requests for financial transactions contain the same set of parameters:






Result of executing the operation. The merchant should use this value to make a decision about the request status (see the section Request status codes).



Request error code (see the section Error codes). Provides an additional explanation of the status field. Optional field.



A copy of the clientOrderId request parameter. Used for financial transactions.



Time when the request was processed (in Yandex.Checkout time).



Optional field. May contain an additional explanation for server responses. This text contains technical information and should not be displayed in any part of the store's interface.


The merchant and Yandex.Checkout interact over HTTPS. To use MWS, the merchant must get an X.509 certificate from the Yandex.Money certificate authority. The merchant uses the certificate to make requests to Yandex.Checkout.

See also

Request status codes

Error codes

Request to refund a successful transfer

HTTP response codes