To set up Authorize.net Merchant Account Payment Processing on your website, you will need the API Login Name and Transaction Key for your Authorize.net account. These are seperate from your Authorize.net Login ID and password.
To find your API Login Name and Transaction Key:
- Go to www.authorize.net, click 'Merchant Login', and enter your Login ID and password to log in to your Authorize.net account.
- Click 'Settings' on the left side of the page.
- Click 'API Login and Transaction Key'.
- Follow security prompts to generate a new transaction key. You'll then find your API Login and Transaction Key in the middle of the page.