Yorkshire Building Society Confirmation of Funds API
OBIE Read/Write Confirmation of Funds (CBPII) API v3.1.2 - lets FCA-authorised card-based payment instrument issuers set up a funds confirmation consent and confirm whether a specified amount is available on a consenting YBS or Chelsea Building Society account. FAPI-secured (OAuth2/OIDC, mTLS, PSD2 SCA).