ReAuthorize Method
Reauthorize the transaction.
Syntax
public void reAuthorize(String authorizationId, String newAmount);
Remarks
Use the ReAuthorize method to check the availability of a PayPal member's funds to make a payment higher than you originally authorized, up to 115% of the originally authorized amount (not to exceed an increase of $75 USD) and up to $10,000 USD. Simply supply the original transaction Id in the AuthorizationId parameter, and the new amount you wish to authorize in the NewAmount parameter.
NOTE: The ReAuthorize method will only return successfully after the initial 3-day authorization period has ended. It will fail if you attempt to re authorize a transaction before this period is up.
You can call ReAuthorize as many times as necessary to obtain one successful reauthorization. When this method returns successfully the three-day authorization period is reset, and you cannot reauthorize the transaction..