# Payment Initiation

Payment initiation in the QR MIA ecosystem is performed by generating a QR code, which can be scanned using the maib mobile application or the phone’s camera to complete the payment.

#### Available QR Types

* **Static QR**\
  Fixed QR code, used in static contexts (e.g., stickers, menus). The amount can be:
  * Fixed
  * Controlled (minimum-maximum range)
  * Free (the user enters the amount)
* **Dynamic QR**\
  QR code generated for a single transaction, with a fixed amount and limited validity.
* **Hybrid QR**\
  Reusable QR code allowing modification of the amount and expiration date. Suitable for static displays but with dynamic behavior.

#### Payment Initiation Steps

1. Select the required QR type (Static, Dynamic, Hybrid)
2. Send a POST request to the corresponding endpoint
3. Include the following details:
   * Amount type (Fixed, Controlled, Free)
   * Currency (only MDL)
   * Amount or limits
   * Expiration date
   * Order description
   * Callback and redirect URLs (for web integration)
4. Receive the response containing the generated QR data:
   * `qrId`: unique identifier of the QR code
   * `extensionId`: extension identifier (only for Hybrid QR)
   * `url`: link to be displayed, saved, or rendered as a QR code
5. Display the QR code to the end user
6. The payment is made by scanning the QR code using the bank app or phone camera

####