Tell about the merchant registration process — how is it organized?

The merchant registration process typically involves several steps:

1. Data collection — the merchant fills out a form with information about themselves and their business (name, contact details, TIN, bank details, etc.).

2. Data verification — the system or staff verify the correctness and authenticity of the provided data, and may request additional documents.

3. Account creation — after successful verification, a merchant profile is created in the system.

4. Parameter setup — the merchant configures payment methods, tariffs, and integration with the website or POS terminal.

5. Activation — after all checks and settings, the account is activated, and the merchant can start accepting payments.

6. Support and monitoring — the system monitors the merchant's activity, providing support and security.

In technical implementation, REST API is often used for data transfer, a database for storing information, and verification mechanisms (for example, through third-party services or manual checks).