What is an Authorization Response?
An authorization response is an issuing financial institution’s electronic message reply to an authorization request, which may include:
APPROVAL – The transaction was approved.
DECLINE – The Transaction was not approved.
REFERRAL – Response pending more information, Merchant must call the toll-free authorization phone number.
Electronic Merchant Systems Payment Processing Glossary :
Defining key payment processing and merchant services industry terms to help business owners make better decisions.