Check transfer

Introduction

Check transfer is initiated through HTTPS POST request by using URLs and the parameters.

Check transfer is used for security purposes and allows Billblend to compare the data sent by Connecting Party’s app with the data stored on Connecting Party’s server.

It is highly recommended to respond with the actual information stored on Connecting Party’s server.

API URLs

Connecting Party Server
https://proxy.connectingpartyserver.com/transfer/{invoiceId}/check

Request Parameters

Parameter Name	Description	Value
consumer		`Necessity`: Required`Type`: Object
consumer.device		`Necessity`: Required`Type`: Object
consumer.device.serialNumber	Consumer’s device serial number.	`Necessity`: Required`Type`: String`Length`: 1-50
session		`Necessity`: Required`Type`: Object
session.accessToken	Consumer’s access token key sent by Connecting Party’s app.	`Necessity`: Required`Type`: String`Length`: 32-128
session.nonce	Value sent by Connecting Party’s app.	`Necessity`: Required`Type`: String`Length`: 32-128
session.signature	Value sent by Connecting Party’s app.	`Necessity`: Required`Type`: String`Length`: 32-128
session.token	The session token of transfer transaction.	`Necessity`: Required`Type`: String`Length`: 16-36
sourceOfFunds		`Necessity`: Optional`Type`: Object
sourceOfFunds.reference		`Necessity`: Optional`Type`: Object
sourceOfFunds.reference.clientCardId	The source card reference identifier (on client side) if sent in Perform Transfer request.	`Necessity`: Optional`Type`: String`Length`: 1-128
destinationOfFunds		`Necessity`: Optional`Type`: Object
destinationOfFunds.reference		`Necessity`: Optional`Type`: Object
destinationOfFunds.reference.clientCardId	The destination card reference identifier (on client side) if sent in Perform Transfer request.	`Necessity`: Optional`Type`: String`Length`: 1-128

Success Response Parameters

Parameter Name	Description	Value
invoiceId	Transfer transaction identifier.	`Necessity`: Required`Type`: String
session		`Necessity`: Required`Type`: Object
session.checkSignature	Checksum generated by hmac-sha1 (see Signature computation) from the concatenation of the consumer.device.serialNumber, session.nonce, destinationOfFunds.reference.serverCardId (if present), endpointId, invoiceId, sourceOfFunds.reference.serverCardId (if present).	`Necessity`: Required`Type`: String
session.nonce	Unique random string generated by Connecting Party’s server in Initiate transfer response.	`Necessity`: Required`Type`: String
session.token	The session token of transfer transaction.	`Necessity`: Required`Type`: String
consumer.email	Consumer’s email address.	`Necessity`: Optional`Type`: String
destinationOfFunds		`Necessity`: Optional`Type`: Object
destinationOfFunds.reference		`Necessity`: Optional`Type`: Object
destinationOfFunds.reference.serverCardId	The destination card reference identifier (on server side).	`Necessity`: Optional`Type`: String
sourceOfFunds		`Necessity`: Optional`Type`: Object
sourceOfFunds.reference		`Necessity`: Optional`Type`: Object
sourceOfFunds.reference.serverCardId	The source card reference identifier (on server side).	`Necessity`: Optional`Type`: String
transaction.currency	Upper case letters (ISO 4217 alpha code).	`Necessity`: Optional`Type`: String
transaction.randomSumCentis	Random sum amount (for random sum check), 1.00 EUR = 100 centis.	`Necessity`: Optional`Type`: Integer

Fail Response Parameters

Parameter Name	Description	Value
error		`Type`: Object
error.cause	Cause of the error. Possible values: `FILTERED`, `INVALID_REQUEST`, `SERVER_FAILED`, `SERVER_UNAVAILABLE`.	`Type`: Enum
error.code	The unique error code.	`Type`: String
error.message	Description of the error.	`Type`: String
invoiceId	Transfer transaction identifier.	`Type`: String

Request Example

{
  "consumer": {
    "device": {
      "serialNumber": "string"
    }
  },
  "destinationOfFunds": {
    "reference": {
      "clientCardId": "string"
    }
  },
  "session": {
    "accessToken": "string",
    "nonce": "string",
    "signature": "string",
    "token": "string"
  },
  "sourceOfFunds": {
    "reference": {
      "clientCardId": "string"
    }
  }
}

Success Response Example

{
  "consumer": {
    "email": "string"
  },
  "destinationOfFunds": {
    "card": {
      "number": "string"
    },
    "reference": {
      "serverCardId": "string"
    }
  },
  "invoiceId": "string",
  "session": {
    "checkSignature": "string",
    "nonce": "string",
    "token": "string"
  },
  "sourceOfFunds": {
    "card": {
      "expiry": {
        "month": "integer",
        "year": "integer"
      },
      "holder":{
        "firstName": "string",
        "lastName": "string"
      },
      "number": "string"
    },
    "reference": {
      "serverCardId": "string",
    }
  },
  "transaction": {
    "currency": "string",
    "randomSumCentis": "integer"
  }
}

Fail Response Example

{
  "error": {
    "cause": "enum",
    "code": "string",
    "message": "string"
  },
  "invoiceId": "string"
}