How to enable API Passcode on your account for use with Payments API requests
1. Log into your account.
2. On the menu, click administration> account settings> order settings.
3. Scroll down, and in the Payment Gateway section, under Security/Authentication, find the ‘API Passcode’ option
4. Click the ‘Generate New Code’ option
5. At the bottom of the page, click Update.
6. A confirmation box opens at the top of the browser window. Click OK.
Now that you have enabled Passcode validation, click here for instructions on how to add Passcode Validation to your API request.