- Go to www.authorize.net. Select Account Login | Merchant Login.
- Enter the Login ID and Password..
- Select Account | Settings.
- Select "API Login and Transaction Key".
- Enter the Secret Answer that you created during your application process.
- Your API Login and Transaction Key will display. Please document it.
- To disable the old transaction key, check the "Disable Old Transaction Key" box.
Note: If the "Disable Old Transaction Key" box is not checked, the old transaction key will automatically expire in 24 hours.
- Click "Submit".
Be sure to store the transaction key in a very safe place. Do not share it with anyone, as it is used to protect your transactions. The system-generated transaction key is similar to a password and is used to authenticate requests submitted to the gateway. If a request cannot be authenticated using the transaction key, the request is rejected. You may generate a new transaction key as often as you wish.