generated: '2026-07-23' method: derived source: openapi/ (OBIE Read/Write v4.0 + Open Data v1.3 standard specifications) note: >- Cross-cutting standards the OBIE specifications Secure Trust Bank's regulated products conform to. Derived from the OpenAPI securitySchemes, headers, error schema and path shapes - not an independent certification claim by Secure Trust Bank. standards: - id: oauth2 conforms: true evidence: securitySchemes TPPOAuth2Security (clientCredentials) + PSUOAuth2Security (authorizationCode) - id: oidc conforms: true evidence: OBIE Security Profile builds on OpenID Connect for PSU authentication and SCA - id: fapi conforms: true evidence: FAPI 1.0 Advanced profile - x-fapi-interaction-id, x-fapi-auth-date, x-fapi-customer-ip-address, x-jws-signature headers and mutual-TLS - id: psd2 conforms: true evidence: UK ASPSP under PSD2 - AIS/PIS/CBPII surfaces with SCA via the authorization-code flow - id: obie-read-write-v4 conforms: true evidence: paths and schemas match OBIE Read/Write Data API Specification v4.0 (aisp/pisp/cbpii) - id: obie-open-data-v1.3 conforms: true evidence: Open Data API for ATMs/branches/products per OBIE Open Data Standard v1.3 - id: idempotency conforms: true evidence: x-idempotency-key header on payment-creation operations (PIS) - id: pagination conforms: true evidence: Links (Self/First/Prev/Next/Last) + Meta (TotalPages) response envelope - id: mutual-tls conforms: true evidence: OBIE/eIDAS transport certificates required for TPP client authentication - id: rfc9457-problem-details conforms: false evidence: errors use the OBIE OBErrorResponse1 envelope, not application/problem+json - id: json-api conforms: false - id: scim conforms: false - id: fhir conforms: false