> ## Documentation Index
> Fetch the complete documentation index at: https://devzone.nayax.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Incremental Authorization

Incremental authorization is a payment feature that allows a merchant to request additional funds on a previously authorized transaction without requiring the customer to re-enter their payment credentials.

<Note>
  **Enable Incremental Authorization**

  Incremental Authorization requires additional configuration on the Nayax side. If you wish to support it, please contact your assigned Nayax integration engineer.
</Note>

## How to implement

After a successful Authorization, if the merchant asks for Incremental, your endpoint will receive one or more [Cortina Credit Card Incremental Auth](/reference/cortina/cortina-credit-card/cortina-credit-card-incremental-auth) requests. The `BasicInfo.Amount` in this request will be the incremental amount. The `PaymentInfo` object will include the details for the linked authorization.

The Response for this request is similar to a regular Authorization response. The final settlement amount will be sent in the Cortina Credit Card Settlement request in the `BasicInfo.Amount` field.