Does the PSU have several spaces at the bank?

One space
The default space is the one tied to the authentication used to obtain the token.
Several workspaces
The AISP lists them through the workspaces link and targets one of them with the workspace parameter.

In STET 1.6.3: Part 2, §4.2.5.1 Body (application/hal+json; charset=utf-8), p. 30
OpenAPIWorkspace
Bank side: The parameter exists on accounts, account holders, balances, transactions, overdrafts and trusted beneficiaries, but not on transaction details or identity. A2 consent can be given per workspace.
TPP side: Check whether the workspaces link is present in the account list. For a payment, the PSU-Workspace header gives the space to use for authentication.
Spec inconsistency: workspace is an object in AccountResource and Beneficiary, and a string in AccountIdentification and in the query parameter.

The entry as stored

{
  "id": "OPT-AIS-003",
  "edition": "1.6.3",
  "chooser": "both",
  "title": {
    "fr": "Workspaces du PSU",
    "en": "PSU workspaces",
    "es": "Workspaces del PSU",
    "pt-br": "Workspaces do PSU"
  },
  "question": {
    "fr": "Le PSU a-t-il plusieurs espaces chez la banque ?",
    "en": "Does the PSU have several spaces at the bank?",
    "es": "¿Tiene el PSU varios espacios en el banco?",
    "pt-br": "O PSU tem vários espaços no banco?"
  },
  "options": [
    {
      "label": {
        "fr": "Un espace",
        "en": "One space",
        "es": "Un espacio",
        "pt-br": "Um espaço"
      },
      "text": {
        "fr": "L'espace par défaut est celui de l'authentification qui a servi à obtenir le token.",
        "en": "The default space is the one tied to the authentication used to obtain the token.",
        "es": "El espacio por defecto es el de la autenticación con la que se obtuvo el token.",
        "pt-br": "O espaço padrão é o da autenticação usada para obter o token."
      }
    },
    {
      "label": {
        "fr": "Plusieurs workspaces",
        "en": "Several workspaces",
        "es": "Varios workspaces",
        "pt-br": "Vários workspaces"
      },
      "text": {
        "fr": "L'AISP les liste par le lien `workspaces` et cible l'un d'eux par le paramètre `workspace`.",
        "en": "The AISP lists them through the `workspaces` link and targets one of them with the `workspace` parameter.",
        "es": "El AISP los lista con el enlace `workspaces` y apunta a uno de ellos con el parámetro `workspace`.",
        "pt-br": "O AISP os lista pelo link `workspaces` e escolhe um deles pelo parâmetro `workspace`."
      }
    }
  ],
  "stet": {
    "sections": [
      {
        "part": "functional-model",
        "section": "4.2.5.1",
        "page": 30
      }
    ],
    "openapi": [
      "Workspace"
    ],
    "flows": [],
    "changes": [],
    "remark": null
  },
  "aspsp": {
    "fr": "Le paramètre existe sur les comptes, les titulaires, les soldes, les transactions, les découverts et les bénéficiaires de confiance, pas sur le détail des transactions ni sur l'identité. Le consentement A2 peut être donné par workspace.",
    "en": "The parameter exists on accounts, account holders, balances, transactions, overdrafts and trusted beneficiaries, but not on transaction details or identity. A2 consent can be given per workspace.",
    "es": "El parámetro existe en las cuentas, los titulares, los saldos, las transacciones, los descubiertos y los beneficiarios de confianza, pero no en el detalle de las transacciones ni en la identidad. El consentimiento A2 puede darse por workspace.",
    "pt-br": "O parâmetro existe nas contas, nos titulares, nos saldos, nas transações, nos limites de cheque especial e nos beneficiários confiáveis, mas não no detalhe das transações nem na identidade. O consentimento A2 pode ser dado por workspace."
  },
  "tpp": {
    "fr": "Regarder si le lien `workspaces` est présent dans la liste des comptes. Pour un paiement, l'en-tête `PSU-Workspace` indique l'espace à utiliser pour l'authentification.",
    "en": "Check whether the `workspaces` link is present in the account list. For a payment, the `PSU-Workspace` header gives the space to use for authentication.",
    "es": "Comprobar si el enlace `workspaces` aparece en la lista de cuentas. En un pago, el header `PSU-Workspace` indica el espacio que se usa para la autenticación.",
    "pt-br": "Verificar se o link `workspaces` está presente na lista de contas. Em um pagamento, o header `PSU-Workspace` indica o espaço a usar na autenticação."
  },
  "regulation": null,
  "note": {
    "fr": "`workspace` est un objet dans `AccountResource` et `Beneficiary`, une chaîne dans `AccountIdentification` et dans le paramètre de requête.",
    "en": "`workspace` is an object in `AccountResource` and `Beneficiary`, and a string in `AccountIdentification` and in the query parameter.",
    "es": "`workspace` es un objeto en `AccountResource` y `Beneficiary`, y una cadena en `AccountIdentification` y en el parámetro de consulta.",
    "pt-br": "`workspace` é um objeto em `AccountResource` e `Beneficiary`, e uma string em `AccountIdentification` e no parâmetro de query."
  },
  "production": null,
  "verifiedAt": "2026-10-19"
}

All options

The options