> For the complete documentation index, see [llms.txt](https://docs.morpara.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.morpara.com/tr/en/api-documentation/destekleyiciservisler.md).

# Supporting Services

This section covers services that **do not directly initiate payment** but support payment flows. Supporting services aim to ensure correct decisions during integration, improve the user experience, and provide operational controls.

This document **Supporting Services** provides a general framework for the main page. Detailed technical information for each service is available on the relevant subpages.

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### Purpose of Supporting Services

Supporting services are used in the following scenarios:

* Detection of card and bank information before payment
* Selection of the correct payment flow (3D / Non-3D)
* Application of business rules specific to card type or bank
* Reduction of error rates and failed transactions

These services alone do not create a financial transaction.

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### Available Services

#### 1. BIN Lookup

Enables obtaining basic information about the card using the first 6 digits of the card number (BIN – Bank Identification Number).

**Provided information:**

* The bank that issued the card
* Card brand (Visa, Mastercard, etc.)
* Card type (Debit / Credit / Prepaid)
* Whether the card is domestic or foreign

**Typical usage scenarios:**

* Displaying the bank logo on the payment screen
* Decisions on 3D Secure requirement
* Determining installment or commission rules

➡️ For detailed technical integration: **See the BIN Lookup** page.

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### Common Concepts

Some basic concepts frequently used in supporting services:

* **bin**: The first 6 digits of the card number
* **cardBrand**: Card brand
* **cardType**: Card type
* **issuingBank**: The bank that issued the card

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### Integration and Performance Notes

* Supporting services are usually called before payment
* Synchronous use is recommended for low latency
* Unnecessary repeated calls should be avoided
* Responses can be supported with caching mechanisms

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As a next step, you can select the relevant supporting service to go to the technical details page.