When a customer pays via the PayPal button then cancelled for somereason and decided to re-order, there are instances where duplicate SalesOrders area created. This results to a Pending PayPal Authorization statuson the order.
Follow the steps below to prevent duplicate orders with 'PendingPaypal Authorization' status:
1. Navigate to Setup > Accounting > PayPal Accounts.
2. Edit the PayPal Account use for receiving the payments.
3. Under the Account Basics Section, put a tick mark on the Use ExpressCheckout check box.
Note: This feature should first be requested by the customer withPayPal. To know more information about PayPal Express Checkout, visitSuiteAnswer article 27568 PayPal Integration and Express Checkout.