If you are applying a payment or trying to check out a booking and receive the following error message:
To ensure billing information is correct, please go to the agents page and set an 'Agent type' for this agent:
It will be because the agent does not have an Agent type set. To fix the issue, you will need to do the following:
Go to the Agents tab while in Preno.
Click on the agent that needs to be updated.
Tick whether payment is collected at the property or if the agent collects the payment.
Once the agent type has been set, you should be able to apply payments to the booking and check out the booking.