post
https://api-sandbox-v2-hml.openkeys.celcoin.sandbox.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.