post https://api-sandbox-v2.openkeys.8429y94d.hml.fsapps.app/open-keys/itp/api/v2/payments/v4/payment-initiation//pix
Executes a PIX instant payment for a previously created payment initiation. Supports different local instruments including DICT (PIX key), QRDN and QRES (QR codes). Requires FIDO authentication flow for transaction authorization according to Open Finance Brasil regulations.