A pre-authorization allows you to prepare a sale, placing a hold on the funds, but not processing the sale immediately. This is a two-part process and you must close the pre-authorization to complete the transaction.

Notes: 

To create a pre-auth:

To close or complete a pre-auth:
This is to close the pre-authorization request and process the payment.

To cancel a pre-auth:
This is to cancel the pre-authorization request.