Zoho CRM Extension - Test Your Extension - Sandbox Instance - Missing Vendor Module

Zoho CRM Extension - Test Your Extension - Sandbox Instance - Missing Vendor Module

Hello All,

We have developed a Zoho CRM Extension via the developer.zoho.com, which depends on Accounts and Vendors module .
While trying to test the extension, a sandbox CRM instance like ( https://plugin-extensionname.zohosandbox.com/crm) gets created with our extension components.
However, we noticed the Vendor tab is missing. Our extension requires the Vendor module for successful test execution.
Relevant screenshots attached.
Is the sandbox CRM instance missing the module? Is there a way to enable it?
Can we not publish CRM extensions involving Vendor module?

Thanks
Dinesh