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:
| Parameter | Value |
`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:
| Parameter | Value |
`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: