If you want to use Visa Checkout functionality in the Process Trans API, you need to obtain Visa Checkout API keys. There are two keys, one for Live Production and the other is a Sandbox API Key used for testing. Make sure you are using the correct key for the type of processing you are doing.
To obtain your Visa Checkout API keys
- On the menu, click administration> account settings> order settings.
- Scroll down to the Visa Checkout section.
- Use one of these Keys:
Live API Key: Use this key only if you are Live, in production, and processing transactions.
Sandbox API Key: Use this key if you are in testing mode.