generated: '2026-10-09'
method: searched
source: openapi/groupe-bpce-natixis-psd2-accounts-openapi.yml, openapi/groupe-bpce-natixis-wealth-management-psd2-accounts-openapi.yml,
  openapi/groupe-bpce-open-finance-transfer-openapi.yml, openapi/groupe-bpce-psd2-accounts-openapi.yml, openapi/groupe-bpce-psd2-funds-availability-openapi.yml,
  openapi/groupe-bpce-psd2-payments-openapi.yml, https://apistore.groupebpce.com/api/psd2-registration, https://apistore.groupebpce.com/api/account-information-services-3
summary:
  types:
  - mutualTLS
  - oauth2
  oauth2_flows:
  - authorizationCode
  - clientCredentials
schemes:
- name: accessCode
  type: oauth2
  flows:
  - flow: authorizationCode
    authorizationUrl: /stet/psd2/oauth/authorize
    tokenUrl: /stet/psd2/oauth/token
    scopes: 2
  description: 'In order to access the PSU''s account information, the AISP needs to get either an authorization
    code grant or a Client Initiated Backchannel Authentication token.

    In order to post a funds confirmation request, the CBPII needs to get either an authorization code grant or
    a Client Initiated Backchannel Authentication token when registration of the account has not been previously
    processed.

    In order '
  sources:
  - openapi/groupe-bpce-natixis-psd2-accounts-openapi.yml
  - openapi/groupe-bpce-natixis-wealth-management-psd2-accounts-openapi.yml
  - openapi/groupe-bpce-open-finance-transfer-openapi.yml
  - openapi/groupe-bpce-psd2-accounts-openapi.yml
  - openapi/groupe-bpce-psd2-funds-availability-openapi.yml
  - openapi/groupe-bpce-psd2-payments-openapi.yml
- name: clientCredentials
  type: oauth2
  flows:
  - flow: clientCredentials
    tokenUrl: /stet/psd2/oauth/token
    scopes: 1
  description: 'In order to post, get or cancel a Payment or Transfer Request, the PISP needs to get a client credential
    OAUTH2 token.

    In order to confirm a Payment or Transfer Request, the PISP needs to get either an authorization code grant
    or a client credential OAUTH2 token.

    In order to post a funds confirmation request, the CBPII needs to get a client credential OAUTH2 token when
    registration of the account '
  sources:
  - openapi/groupe-bpce-psd2-funds-availability-openapi.yml
  - openapi/groupe-bpce-psd2-payments-openapi.yml
- name: eidas-mtls
  type: mutualTLS
  description: '"Use of same TPP eIDAS certificate (QWAC) to be presented for mutual TLS authentication"; "TPP needs
    to use a TLS mutual authentication based on QWAC certificate with this POST /token method." Not declared as
    a securityScheme in the specs.'
  sources:
  - https://apistore.groupebpce.com/api/account-information-services-3
  - https://apistore.groupebpce.com/api/psd2-registration
- name: http-signature-qsealc
  type: signature
  description: PSD2 requests carry Signature and Digest headers (STET); the registration jwks must contain the QSEALC
    public key ("kty" RSA, "alg" RS256, "use" sig).
  sources:
  - openapi/groupe-bpce-psd2-payments-openapi.yml
  - https://apistore.groupebpce.com/api/psd2-registration
- name: registration-client-credentials
  type: oauth2
  flows:
  - flow: clientCredentials
    tokenUrl: https://www.<codetab>.live.api.89C3.com/stet/psd2/oauth/token
  description: 'Registration API: generic client_id “PSD2_TPPRegister”, grant_type client_credentials, scope manageRegistration;
    returns a temporary access token; POST /register returns the client_id used in all PSD2 methods.'
  sources:
  - https://apistore.groupebpce.com/api/psd2-registration
docs: https://apistore.groupebpce.com/api/psd2-registration
client_id_rule: client_id must equal the organization identifier from the eIDAS certificate distinguished name (ETSI
  TS 119 495 §5.2.1), e.g. PSDFR-ACPR-12345.