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Diagram illustrating the retrieval request process in card transactions

Chargeback

What is a Retrieval Request?

A chargeback is when cardholders dispute a transaction made without their knowledge through their card-issuing bank. So what does a Retrieval Request mean? It is essentially a document request related to transactions a cardholder does not recognize on their statement.

Example of a combo card showing credit card information on the front and debit card information on the back

Credit Card

What is a combo card?

A combo card is a next-generation card that combines both a credit card and a debit card on a single card. Although designs vary visually, the front typically carries the credit card information and the back the debit card information.

Contactless payment being made with a card at a POS terminal

Online & Authorization

When Does a Contactless Transaction Post to the Account?

A contactless transaction is a fast, secure payment made without direct contact between the card and the POS terminal (without reading the chip or magnetic stripe). Can every card be used for contactless payments? For a transaction to be contactless…

Diagram illustrating the Track 1 data structure and field layout on a magnetic stripe card

Credit Card

What is Track 1?

Track 1 is a special data set encoded on a card's magnetic stripe that contains the card information required for authorization when the card is used physically. It includes the cardholder name, card number, and expiration date.

Illustration of a fallback transaction swiping a card's magnetic stripe after a chip read failure

Merchant & POS

What Is a Fallback Transaction?

When a chip can't be read due to a chip fault or the card being inserted incorrectly, the transaction is completed by swiping the magnetic stripe on the right side of the POS. Can chipless cards do fallback?

POS terminal performing a contactless card payment

Contactless

Can I make a 1,000 TL contactless transaction?

Updated info: this article describes the limit at the time it was published. For the current contactless (PIN-free) transaction limit, see the linked article. A 1,000 TL contactless transaction is technically possible, but banks won't take that risk.

Diagram illustrating TCR (Transaction Record Component) packets used in payment clearing and settlement files

Payment Systems

What Is TCR (Transaction Record Component)?

TCR stands for Transaction Record Component, the packets that carry transaction information in a clearing system. Transaction types in a clearing file are distinguished by transaction code and usage code values, and this data is sent inside TCR packets.

ISO 8583 field 13 local transaction date

ISO 8583

ISO 8583 Field Descriptions (F13)

DE 13 — Date, Local Transaction: the date on which the transaction took place at the point of transaction (ATM, POS). It is 4 digits in MMDD format.

Illustration representing a fictitious POS transaction

Fraud

What Is a Fictitious Transaction?

According to the Banks Association of Turkey, a fictitious transaction is a collusive transaction made by misusing POS devices, debit cards, or credit cards. Banks that detect such transactions through merchants report them to the Banks Association of Turkey.

Contactless floor limit, CVM limit and transaction limit example

Merchant & POS

Can a Contactless Transaction Be Online?

Yes. Whether a contactless transaction goes online depends on the limits on the card and the POS: the contactless floor limit, the CVM limit and the contactless transaction limit. A worked example shows how.