Sage 200 - 'The cash book account specified no longer exists' Error when downloading transaction via Invoice Payments Portal

When attempting to 'Download and Process' payments via Process Invoice Payments, you will be presented with the error 'The cash book account specified no longer exists', this article will guide you through the workaround.

Workaround: 

1: Cash Book > Period End Routines > Invoice Payments > Process Invoice Payments
2: Select Download rather than Download and process
3: Error will appear, click Ok then go into Cash Book > Period End Routines > Invoice Payments > Maintain Invoice Payment Transactions
4: From the Service provider option at the top of the screen, drop down and select GoCardless (or Stripe / PayPal as appropriate)
5: Set the data range to the date you have just downloaded then click display.
6: Click process, this will create the transactions as usual.