On Perform Transaction -- Step 2 page, complete the appropriate fields to complete the Credit transaction.
Be sure to enter information for all fields denoted by an asterisk.
The Original Transaction Amount field displays the original transaction amount. You can use the came amount, or change it to credit partial amounts (refer to the note above). Use a positive number and include a decimal point and cents (00 if no cents are involved). For example, 42.00.
Enter Comment 1 about the transaction. For example, you can enter order tracking information like order ID or confirmation number. The comments are saved with the transaction data and appear in PayPal Manager reports.
Verify the information and click Submit to submit the transaction.