Create a custom payment redirect address

post https://api.sandbox.crezco.com/v1/users/{userId}/pay-demands/{payDemandId}/payment

Custom redirect URLs allow specification of both the initial and final screen of the payment user's journey:

InitialScreen

DetailsCheck: The standard payment confirmation screen, showing all details of the PayDemand
BankSelection: The bank selection screen
ContinueToBank: A screen redirecting the the specified bank

NOTE: Using ContinueToBank also requires bankId and countryIso2Code. Bank details are available using
the v1/banks/ endpoint

FinalScreen

PaymentStatus: Payment status, shown until payment reaches a finalised state
PaymentConfirmation: Payment confirmation, allows user to enter email for a receipt
PaymentFeedback: Payment feedback, allows user to rate the payment experience

Successful payments will be directed to successCallbackUri after the FinalScreen.
Cancelled or failed payments will be directed to failureCallbackUri.