There are two reasons why transactions are posted in Unapproved Customer Payment account.
1. When Cash Sale, Customer Payment, Customer Deposit & Customer/Cash Refunds are entered with the credit card information without checking either the Charge Credit Card/Process Credit Card or CC Approved, will be posted to Unapproved Customer Payments account.
2. When one of the fraud filters which is setup in PayPal Manager is triggered. The transaction is temporarily posted in Unapproved Customer Payments account until the transaction is reviewed. This happens when using PayFlow Pro as a payment gateway.
Note: All transactions posted in Unapproved Customer Payments account will not show in Sales & Financial Reports because the account is a Non Posting type.