Yes. After creating your order form, navigate to your Form Editor select Sage Pay under the E-Commerce section.

Below, in the payment gateway integration box, specify the Vendor Name, Encrypted Password, Vendor Email (optional) and Partner ID (optional). Enable the integration on the top.

Important Note: Sage Pay translates sandbox as a simulator. At Sage Pay you can create your Sage Pay simulator account. Once you have a simulator account, enter its information in the Payment Processors of your 123FormBuilder account. Enable payments in sandbox mode in the Payments section of your form and you are done.
You can start testing your 123FormBuilder – Sage Pay payment processor and simulate a transaction.

There are several aspects you should keep in mind:
- There are two different passwords associated with your Sage Pay account: the Vendor Password and the Encrypted Password. The one you need to use is the Encrypted Password. It is delivered to you in the confirmation email sent by Sage Pay when you create your account.
- No currency is added by default to your Sage Pay account, so you need to set it up in your Sage Pay interface.
- Vendor Email and Partner ID are optional settings. The Vendor Email is the email address that will receive order confirmations and failures. The Partner ID can be used if you are a Sage Pay partner and want to flag transactions with your unique partner ID.