The following simulation illustrates a Hosted Payment Process Result error during order entry using authorize by email where a Braintree Connection is primary and a PayPal Connection is the fallback. 

Enter the order header making sure to use ERR03 in the Customer PO field and the payment instrument designated for credit card. 

Enter order details and advance to the payment screen. Now, make sure before you press Authorize by Email that your total to authorize equals $3000.

Receive the email invitation and click Pay Now. Enter the credit card information into the primary form and submit the payment to simulate the Payment Process Result error.   

Now the Hosted Payment Process Result error is simulated so you get the retry option.

Click retry and the fallback payment form will be presented. Remember that since Paypal is the fallback in this scenario anything over $1000 will decline.  Therefore, this is the end of this simulation.