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POS terminal software version update process diagram

Merchant & POS

How is a software version uploaded to a POS terminal?

To upload a version to a POS, the software on the POS and the authorization system on the bank side must support it. Version upload to a POS can be done manually on the device itself, or via a remote upload request.

POS terminal screen showing the cancellation transaction menu

Merchant & POS

How does the cancellation (void) process work on a POS?

Many transactions are carried out with cards on a POS terminal. Sometimes a transaction must be reversed, and cancellation (void) is one such transaction. A Sale can only be cancelled on the POS before the batch (end of day) is closed; otherwise a refund is needed.

Screenshot of a POS parameter loading screen

Merchant & POS

How is parameter loading done onto a POS?

Loading parameters onto a POS transfers changes made in the POS Management system (authorization, limits, card BIN list, etc.) onto the POS. There are 3 ways to do it.

Diagram illustrating how a POS device identifies foreign bank cards using BIN lists

Merchant & POS

How Does a POS Device Detect Foreign Cards?

A POS is a functional device with its own dedicated software, customized according to the authorization system of the bank it is connected to, that accepts credit or debit cards. So, banks abroad launch dozens of new card products every day…

Diagram showing how offline transactions are relayed from the POS to the card bank

Merchant & POS

How Do Offline Transactions Reach the Card and POS Bank?

In chip transactions made with a credit card via POS, the transaction amount is approved by the card and POS based on parameters on the card and POS, without going to the card bank or POS bank. These are called offline transactions.

BKM Central POS Database (MPV) illustration

Merchant & POS

What Is MPV (Central POS Database)?

MPV stands for Merkezi POS Veritabanı (Central POS Database), BKM's shared database of all POS terminals operated by its card-accepting members, used for support, statistics, fraud analysis and the Common POS Management System.

Payment POS terminal reading a bank card at a merchant counter

Payment Systems

Beware of Inefficient POS Terminals and Lines!

Why do institutions track inefficient POS terminals and lines? This post looks at the costs they create, such as device purchases, field service and software fees, and how to deal with merchants that generate little turnover.