82ad790e_and_Merchant_Services_Glossary__Definition
[Term] Authorization Only Transaction [Definition] 
to ensure that a credit card has a limit high enough to allow a transaction, transactions are created to reserve an amount against a credit card's available limit for intended purchases; an authorization only transaction is intended for a merchant's protection, to ensure that the credit card has a limit high enough to allow a transaction.
Credit Card Processing and Merchant Services Glossary
Definition