Acquirer reference number (ARN), is a novel number that tags a bank card transaction when it goes from the getting bank towards the cardholder's bank. Banks could use this number to trace a transaction by having an acquirer. Authorization forms: For every authorized signatory, upload authorization copy or simply http://gst-registration-process24680.dsiblogger.com/24934709/hsn-code-for-gst-registration-for-dummies