SuiteScript 2.0 SSP applications must be explicitly made available on websites and domains; unlike SuiteScript 1.0 SSP applications, they are not available by default.
To make an SSP Application available on your system domain:
Go to Setup > SuiteCommerce Advanced > SSP Applications.
Click Edit next to an SSP application.
Check Available on System Domain. System domains are those that have the format
Save the SSP application record.
To learn how to deploy an SSP application record to one or more custom domains, see Deploy and Undeploy SSP Applications.