Adeveloper cannot create a custom object in Business Manager because the attributes do not show.

When attributes do not appear for a custom object in the Business Manager, it's typically because they are not organized into an attribute group. To resolve this issue, the developer should create an attribute group and include all the desired attributes within this group. This configuration allows the attributes to be properly displayed and managed in the Business Manager. This practice ensures that attributes are correctly categorized and accessible, which aligns with Salesforce B2C Commerce's data management strategies and administrative best practices.