At least 1 metre of freeboard is required. Freeboard is the height from the top of the water. level (i.e. spillway level) to the top of the wall. 11. Stockpiled topsoil should be spread over. the dam wall and spillway and seeded immediately. with grasses to promote stabilising vegetation.
In Express Checkout, authorizing and processing a payment requires: 1  Setting up the payment authorization. 2  Redirecting the customer to PayPal. 3  Obtaining the customer details.  Confirming the payment 1  authorization. Capturing the payment (future).
Step 3: Obtain the Customer Details. If the customer approves of the payment authorization, the customer is redirected to the return URL (specified in SetExpressCheckout), appended with the token from Step 1. Call GetExpressCheckoutDetails to obtain a PayerID value, which uniquely identifies the customer.