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Diagram explaining ISO 8583 field 11 (STAN)

ISO 8583

ISO 8583 Field Descriptions (F11)

DE 11 - SYSTEMS TRACE AUDIT NUMBER: A 6-digit unique numeric value generated by the message originator, enabling unique tracking of the transaction. How is STAN generated?

Diagram of the Shared POS Management System (OPYS)

Merchant & POS

What Is the Shared POS Management System (OPYS)?

Developed by BKM and made available to banks, OPYS centrally supports setting up multi-application POS terminals shared by multiple members, inviting other members, adding or removing them, and managing field company relationships.

Illustration representing the advantages and disadvantages of credit cards

Credit Card

What Are the Advantages and Disadvantages of a Credit Card?

Credit cards can be a convenient way to manage income and expenses, but for those who don't know how to use them, they can become an expensive and risky product. Here are the key pros and cons to weigh before applying for one.

POS terminal device used for processing card payments

Merchant & POS

What is MIV (Central Merchant Database)?

MIV stands for Central Merchant Database. The MIV Module collects information on merchants across Turkey and the TRNC that have card acceptance agreements with BKM members, and assigns each merchant a unique number for tracking purposes.