1.19. Mobile Device Sale

Introduction

Mobile device sale transaction can be performed with cardholder data or with card reference, previously made with card verification process or in previous transfer/sale transactions.

See terms definitions in Glossary.

Sale Flow

@startuml autonumber title Mobile Device - 3-D Secure sale skinparam ParticipantPadding 70 participant "Consumer" as client participant "Mobile App" as mobile participant "Connecting Party's Server" as party participant "Denumtech" as company client <-> mobile: Authentication mobile -> party: Request access token mobile <-- party: Response access token note right accessToken end note party <- mobile: Initiate sale request party --> mobile: Initiate sale response mobile -> company: Perform sale request mobile <-- company: Perform sale response note right session token end note company -> party: Check sale request company <-- party: Check sale response company -> company: Start processing mobile -> company: Sale status request note left session token end note mobile <-- company: Sale status response note right state = REDIRECT_REQUEST redirectUrl end note mobile -> mobile: Open browser and provide \nredirectUrl to redirect to 3DS page activate mobile client <-- mobile: Provide redirectUrl client -> mobile: The cardholder provides auth data mobile -> company: 3DS status update company --> mobile: Close browser request destroy mobile company -> company: Process sale party <- company: Sale card mapping notification request note right server card id end note party --> company: Sale card mapping notification response mobile -> company: Sale status request note left session token end note mobile <-- company: Sale status response note right bankorder id state = APPROVED|DECLINED end note party <- company: Callback with final status request party --> company: Callback with final status response @enduml

(1,2,3) To perform authentication of Consumer in Connecting Party’s app, Connecting Party can use any method which fits best to his needs. As a result, Connecting Party’s server generates {accessToken} and provides it to Connecting Party’s app. This parameter will be used to start and continue session.
(4,5) To initiate sale, Connecting Party’s app sends {accessToken} with transaction amount and other device parameters to Connecting Party’s server, which are used to start a session with unique random {nonce} and encrypted {signature}. To implement initiate sale request see Initiate Sale.
(6,7) On this stage Connecting Party’s app sends cardholder, device, session data and other parameters straight to Denumtech to perform sale transaction. To implement perform sale request see Perform sale.
(8,9) Check sale is used for security purposes and allows Denumtech to compare the data sent by Connecting Party’s app with the data stored on Connecting Party’s server. To implement check sale request see Check Sale.
(11,12,21,22) Sale status request is made by Connecting Party’s app to Denumtech to get the status of sale transaction.To implement sale status request see Sale status.
(19,20) Denumtech sends Sale card mapping notification request to Connecting Party’s server/proxy with created on its side card reference - {serverCardId}. To implement sale card mapping notification request see Sale card mapping notification.
(23,24) If Connecting Party callback URL is specified on endpoint level, Payment Gateway sends message to this callback URL whenever transaction reaches final status, no matter if the result is approved, declined or has other final status. See more in Callbacks.

Repeat Sale Flow

After successful Card mapping procedure, new sale transactions with the same cardholder data can be done easier for Consumer.
Connecting Party’s app makes new sale requests using {clientCardId} instead of cardholder data. Denumtech sends this {clientCardId} to Connecting Party’s server in “Check sale request” and gets mapped to it {serverCardId} in “Check sale response” from Connecting Party’s server. This {serverCardId} is used to continue the processing of sale transaction.
Transaction flow remains the same: Initiate Sale -> Perform sale -> Check Sale.
If there is no need to change Consumer’s data (such as address, phone, etc.), “Perform sale request” for Repeat sale may be sent without any optional parameters. If Consumer’s data has to be changed, new source card reference must be created.
If {clientCardId} is used in “Perform sale request”, {serverCardId} must be included in “Check sale response” and signature.
If {clientCardId} was mapped to {serverCardId} in transaction with included {consumer.email} value, new “Perform sale request” and “Check sale response” with this {clientCardId} must also contain the same {consumer.email} value.

For Repeat Sale Flow use the following parameters in Perform Sale request:

  1. {sourceOfFunds.reference.clientCardId}

  2. {sourceOfFunds.reference.securityCode}

Instead of:

  1. {sourceOfFunds.card.expiry.month}

  2. {sourceOfFunds.card.expiry.year}

  3. {sourceOfFunds.card.holder}

  4. {sourceOfFunds.card.holder.firstName}

  5. {sourceOfFunds.card.holder.lastName}

  6. {sourceOfFunds.card.number}

  7. {sourceOfFunds.card.securityCode}

@startuml autonumber title Mobile Device - Card references for Repeat sale participant "Mobile App" as mobile participant "Connecting Party's Server" as party participant "Payment Gateway" as company skinparam ParticipantPadding 80 == Last part of previous transaction == party <- company: Card mapping notification request note right serverCardId end note party --> company: Card mapping notification response party --> party: Create clientCardId for serverCardId party -> mobile: Store reference in app or send it by request note right clientCardId end note == New sale == mobile -> party: Initiate sale request mobile <-- party: Initiate sale response mobile -> company: Perform sale request note left clientCardId end note mobile <-- company: Perform sale response party <- company: Check sale request note right clientCardId end note party --> company: Check sale response note left serverCardId end note company -> company: Process sale @enduml

(1,2) Denumtech sends Sale card mapping notification request to Connecting Party’s server/proxy with created on its side card reference - {serverCardId}. To implement sale card mapping notification request see Sale card mapping notification.
(5,6) To initiate sale, Connecting Party’s app sends {accessToken} with transaction amount and other device parameters to Connecting Party’s server, which are used to start a session with unique random {nonce} and encrypted {signature}. To implement initiate sale request see Initiate Sale.
(7,8) On this stage Connecting Party’s app sends cardholder, device, session data and other parameters straight to Denumtech to perform sale transaction. To implement perform sale request see Perform sale.
(9,10) Check sale is used for security purposes and allows Denumtech to compare the data sent by Connecting Party’s app with the data stored on Connecting Party’s server. To implement check sale request see Check Sale.