Yorkshire Building Society Payment Initiation API
OBIE Read/Write Payment Initiation (PISP) API v3.1.2 - lets FCA-authorised payment initiation service providers set up domestic single, scheduled, standing-order and file payment consents and initiate payments from consenting YBS and Chelsea Building Society accounts. FAPI-secured (OAuth2/OIDC, mTLS, PSD2 SCA).