Previously submitted "authorize" transactions can be "captured", which means converting them to a sale for the same or lesser amount than the orginal authorization.
Include the following JSON object with the post to describe the transaction.
|ApiKey: "string",||your api key||*|
|TransactionId: "string"||the id of a previously entered transaction of type "auth"||*|
|Amount: number||amount to capture - must be less than or equal to original transaction amount||*|
This API returns the following in JSON format if the operation is successful.
|ID||TransactionId of the transaction|