4.1. mPOS API

Introduction

mPOS is a device that is able to read card data from plastic cards (like magnetic stripe tracks) or other devices and transmit this data to the Denumtech mPOS API in an encrypted form.
mPOS API (MAPI) supports Sale and Preauth transactions with status requests and callbacks for transaction status handling.
Depending on the exact acquiring solution, it might be required to implement regular Close Day procedure for bank payment clearing via /api/v2/close-day/ API command. Please contact support manager for details.

Mobile App Integration flow

Denumtech team creates a dedicated account on sandbox environment and provides integrator with test ENDPOINTID, merchant_control_key and test mPOS devices with pre-installed encryption key for processing test transactions. mPOS devices (each has a serial number) are handed to integrator along with SDK for communication (see mPOS SDK for iOS and mPOS SDK for Android and Java). Integrator team implements Sale and/or Preauth transaction flows and MobileApp-to-mPOS communication tailoring their needs.

Sale Flow

skinparam roundcorner 20 skinparam sequenceArrowThickness 1 skinparam maxmessagesize 1200 skinparam sequenceParticipant underline actor Payer participant "Connecting Party" as A participant Denumtech as B autonumber Payer -> A: Checkout activate A A -> B: /mapi/v1/sale/ activate B B --> A: Order ID B -> B: Process\nSale group Get Final Status == Receive Connecting Party Callback == A <- B: Callback with Final Status A --> B: HTTP 200 deactivate B == Order Status Request == A -> B: Get Status by Order ID activate B B --> A: Final Status deactivate B end A --> Payer: Show result deactivate Payer deactivate A

(2) To implement sale request see /mapi/v1/sale/.
(5) To implement callback with final status handling see Connecting Party Callback.
(7) To implement order status request see /api/v2/status/. Status should be requested multiple times with 3-5 seconds interval until final status will be received in response.

Preauth Flow

skinparam roundcorner 20 skinparam sequenceArrowThickness 1 skinparam maxmessagesize 1200 skinparam sequenceParticipant underline actor Payer participant "Connecting Party" as A participant Denumtech as B autonumber Payer -> A: Checkout activate A A -> B: /mapi/v1/preauth/ activate B B --> A: Order ID B -> B: Process\nPreauth group Get Final Status == Receive Connecting Party Callback == A <- B: Callback with Final Status A --> B: HTTP 200 deactivate B == Order Status Request == A -> B: Get Status by Order ID activate B B --> A: Final Status deactivate B end A --> Payer: Show result deactivate Payer deactivate A

(2) To implement preauth request see /mapi/v1/preauth/.
(5) To implement callback with final status handling see Connecting Party Callback.
(7) To implement order status request see /api/v2/status/. Status should be requested multiple times with 3-5 seconds interval until final status will be received in response.