- Log into the Merchant Interface.
- Click Account from the main toolbar.
- Click Settings in the main left-side menu.
- Click API Credentials & Keys.
- Enter your Secret Answer.
- Select New Transaction Key.
- Note: When obtaining a new Transaction Key, you may choose to disable the old Transaction Key by clicking the box titled, Disable
- Old Transaction Key Immediately. You may want to do this if you suspect your previous Transaction Key is being used fraudulently.
- Click Submit to continue. Your new Transaction Key is displayed.
For more information please visit Authorize.net