
ISO 8583
ISO 8583 Field Descriptions (F95)
DE 95, Replacement Amounts, shows the transaction amount information in full or partial reversals. Here are its subfields and how it relates to F4.
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ISO 8583
DE 95, Replacement Amounts, shows the transaction amount information in full or partial reversals. Here are its subfields and how it relates to F4.

Payment Systems
Every payment transaction completes in seconds, yet dozens of controls run behind the scenes. This post covers the precautions for authorization and clearing, the critical role of reversals, and the financial loss scenarios most often seen in the field.

Credit Card
A co-branded card is a card offered by two or more organizations: one the issuing financial institution, the other a non-financial commercial brand (there may be more than one), such as an airline, hotel, or retail chain.

Payment Systems
In payment systems, the tower is the section inside an ATM where cash is physically stored. It contains cassettes holding different banknote denominations, a mix cassette for mismatched notes, and various security mechanisms protecting the cash.

Fraud
Yes. Cardholders have the right to dispute transactions made with their cards without their knowledge. Here is how the process, known as a chargeback, works.

Credit Card
An affinity card is a type of credit card issued by a bank that carries the logo of a social organization such as an association, foundation, sports club, or charity (for example, Fenerbahce Bonus). It is similar in structure to a co-branded card.

Payment Institutions & E-Money
On 7 October 2023, the CBRT amended the Communiqué on Information Systems of Payment and E-Money Institutions and Data Sharing Services of Payment Service Providers, first published on 1 December 2021. Links to the new text, a comparison table and a detailed summary of changes follow.

Merchant & POS
The Secure Mobile Payment System is a system permitted by the Ministry, operated under the Revenue Administration (GIB) Communiqué, for sales, payment and collection transactions and the electronic creation, transmission and retention of the related financial documents.

Merchant & POS
No slip printed after a POS transaction? Here's how to check whether the transaction actually went through and what steps to take if the receipt never came out.

Cryptocurrency
Cryptocurrencies are becoming part of everyday life and are expected to compete seriously with card payments. This glossary explains the key crypto terms, from address, altcoin and arbitrage to halving, mining, proof of stake and stop-loss.

Merchant & POS
The batch number is kept on the POS, incremented by 1 at each end of day, used to transfer transactions to the merchant account and for reconciliation. It's tracked on both the POS and the bank's system.

Payment Systems
The BRSA has introduced a regulation to reduce paper use in POS devices. Cardholders who do not want a paper receipt for card purchases will be able to receive and store it digitally, with the rules taking effect in September and December 2023.