The Payment Initiation API Profile describes the flows and common functionality for the Payment Initiation API, which allows a Payment Initiation Service Provider ('PISP') to: + Register an intent to __stage__ a payment-order consent; + Optionally confirm available funds for a payment-order - Domestic immediate, international immediate and international scheduled (immediate debit) payments only. + Subsequently __submit__ the payment-order for processing. + Optionally retrieve the status of a payment-order __consent__ or payment-order __resource__. For more background and details, see [payment-initiation-api-profile](https://openbankinguk.github.io/read-write-api-site3/v3.1.6/profiles/payment-initiation-api-profile.html) as published by UK OBIE.