User Requirements for Sales Products
Users who will be creating and managing products need the privilege, Manage Product (QSC_MANAGE_PRODUCTS_PRIV).
By default, the supplied Sales Administrator and Customer Relationship Management Application Administrator roles have the abilities to create and manage products and product groups, to import products, and to set up product search, eligibility rules, and audit trail reports.
If you've created custom roles for these users, ensure they have the correct privilege in their user roles.