You can add new properties to the base product type and make some changes to its default properties. You cannot remove any of the default type or SKU properties, though you can do the following:
Mark some of them as not required so that merchandisers can ignore them when creating new products. (The product’s Name, ID, and List Price properties are always required, as is the SKU’s ID property.)
Mark them as Internal-Only so that they cannot appear on the storefront.
To edit the base product type:
On the Catalog page, click the Manage Catalog button and select Product Types.
Click Base Product to display its type properties.
To add new product properties, click Add Property. See Create custom product types for details about how to add a new property.
To edit an existing property, click its Edit button.
You cannot change a default property’s ID. You can make optional properties required, but you cannot make required properties optional.
See Create custom product types for details about property settings.
To add or edit the base product type’s SKU properties, click the SKU Properties tab. Repeat steps 3 and 4 for each SKU property you want to add or change.
Click Done when you finish adding and editing properties.
