Creating Custom Object Types
You create and manage custom object types for additional business objects required by your storefront or business logic to extend the Salesforce B2C Commerce model.
Custom object types must be created in a stage instance, then replicated to production. For example, you could create an object type of 'Sample'. You create the custom object type 'Sample' and then give it attributes, for instance, 'SKU' and 'Date.' Never define custom object types directly in a dev or production instance, because the replication process will remove them. To include custom object types in replication, select the Object Definitions setting in Global Data Replication Settings.
Custom objects can be stored globally (which makes the instances available to the entire organization and all sites), or local (that is, per site). The custom object type itself is always available to the entire organization.