Opps... It's been a while since I've worked on this, so sorry for my dopey enquiry... Apparantly the Transaction Type should be Capture, & it's set in \includes\modules\payment\hsbc.php (just for the record)... Value can be 'TransactionType'=>'Capture', or 'TransactionType'=>'Auth', according to the HSBC 'literature'... :blush: Well that's that then... ;)