---
title: "HalAuthenticationRequest"
canonical: "https://openfinanceguide.com/en/stet/1.6.3/resources/hal-authentication-request"
edition: "STET PSD2 API 1.6.3.1"
source: "https://openfinanceguide.com/docs/stet/1.6.3/pdf/api-dsp2-stet-v1.6.3.2-openapi.yaml"
pdf: "https://openfinanceguide.com/docs/stet/1.6.3/pdf/api-dsp2-stet-v1.6.3.1-part-2-functional-model.pdf"
language: "en"
normative: "The normative text is the English PDF and OpenAPI file published by STET. This Markdown reproduces it for reading; where they differ, the PDF prevails."
license: "CC BY 3.0 FR (https://creativecommons.org/licenses/by/3.0/fr/), STET. Converted to Markdown by Open Finance Guide."
---

# HalAuthenticationRequest

Type: `object` · Kind: Hal

Data forwarded by the ASPSP top the PISP after creation of the Payment Request resource creation
The ASPSP, based on the authentication approaches proposed by the PISP, choose the one that it can processed, in respect with the preferences and constraints of the PSU and indicates in this field which approach was chosen.
It may happen that the ASPSP considers that, in case of payment cancellation request, there is no need for authentication and will then return "NONE".

Fields:

- `appliedAuthenticationApproach`, [`AuthenticationApproach`](https://openfinanceguide.com/raw/stet/1.6.3/en/resources/authentication-approach.md)
- `nonce`, [`Nonce`](https://openfinanceguide.com/raw/stet/1.6.3/en/resources/nonce.md)
- `_links`, [`PaymentRequestResourceCreationLinks`](https://openfinanceguide.com/raw/stet/1.6.3/en/resources/payment-request-resource-creation-links.md)

## Example

```json
{
  "appliedAuthenticationApproach": "REDIRECT",
  "nonce": "GH6HGH5CGH763",
  "_links": {
    "consentApproval": {
      "href": "https://psd2.aspsp/consent-approval"
    }
  }
}
```

## Used by

- `PUT /payment-requests/{paymentRequestResourceId}` (paymentRequestPut)
- `POST /payment-requests` (paymentRequestsPost)