Callbacks

A callback is sent with POST to the callback_url supplied during operation creation.

Headers

Content-Type: application/json

Main fields

Field	Type	Description
token	string	Operation token
type	string	pay, payout, or refund
status	string	Operation status
extraReturnParam	string/null	Merchant-provided value
orderNumber	string/null	Merchant order number
amount	integer	Amount in minor currency units
currency	string	Operation currency
gatewayAmount	integer	Provider amount
gatewayCurrency	string	Provider currency
cardHolder	string/null	Cardholder name
gatewayDetails	object/null	Provider details
walletToken	string/null	Wallet token
signature	string	Callback MD5 signature

gatewayDetails

The object depends on the provider and may contain IP, BIN, merchant, requisite, redirect, and recurring data.

Idempotency

The platform may deliver the same callback more than once. Merchant processing uniqueness is determined by operation token and state.

The signature algorithm is listed in Signature Validation.