Captures a previously authorized (auth only) transaction run using an Alternative Payment Method.
To use the Try It feature for this endpoint, you can use the credentials for your Sandbox API user.
You can also use the following test account (that is connected with PayPal). Copy the value and paste it into the appropriate space in the Try It section to the right.
username: [email protected]
Include the ID of the payment request and the amount of the transaction in your request.