# Payment request configuration

Access the Merchant Back Office, select the Settings tab, then proceed to choose the sub-tab Settings. You can modify the following fields:&#x20;

* Token type allowed for payment&#x20;
* Validity period of the QR code&#x20;
* Enable/disable payment or refund functionality

<figure><img src="https://2355851929-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDgCMMBAjkupdWPMmlbNQ%2Fuploads%2F4g80X5PbPxiRlbP3fbJs%2Fimage.png?alt=media&#x26;token=04b50dc0-9283-4332-b7ab-5ce20a3a6097" alt=""><figcaption></figcaption></figure>
