Before can use an SSL certificate to secure the shopping portion of your web store under an HTTPS domain, you must set up a secure shopping domain in NetSuite. See Set Up a Domain for more information.
When setting up a secure domain, be aware that sites implementing Site Builder can only secure the shopping portion of the web store under a separate HTTPS domain. Site Builder sites cannot implement a single secure domain for both Shopping and Checkout applications.
When you have configured your domain, continue with the next step: Apply Patch to Source Files.