A cardholder makes a $35 purchase, but the merchant never settles the transaction. In <<glossary:Production>>, the authorization would expire after the configured number of days. In <<glossary:CV>>, you must use the <a href="ref:post_expireauthorization" target="_blank">Expire Authorization</a> endpoint to achieve the same result.

### Authorization

Call <a href="ref:post_createsimulatedcardauth" target="_blank">Create Simulated Card Authorization</a> with these parameters:

ParameterValue
`accountNo`<<glossary:PAN>> or <<glossary:PRN>>
`amount``35`
`association``visa` or `mc_auth`
`merchantName``Central Clothier`
`mcc``5651`
`transType``1` or leave blank


Capture the `auth_id` for later use.

### Expiry

Call <a href="ref:post_expireauthorization" target="_blank">Expire Authorization</a> with these parameters:

ParameterValue
`accountNo`PAN or PRN
`authId``auth_id` from the previous authorization


### Transactions created

Call <a href="ref:post_getalltranshistory" target="_blank">Get All Transaction History</a> to see the two ledger entries: