When a data stream is created, its associated Data Lake Objects (DLOs) and the resulting Data Model Objects (DMOs) are available only in the default data space. To use these objects in another data space, they must be explicitly added to that space's configuration. The correct procedure is to navigate to the specific data space's settings and select the required DLOs and DMOs to make them available for mapping and other operations within that segregated environment. This ensures proper data governance and isolation between brands.

A. Creating a new data stream for the same data source is inefficient and doesn't solve the object visibility issue in the new data space.

B. Copying data is a data manipulation task, not the correct method for making an object's schema available in a different data space.

C. A batch transform is used for data processing and enrichment, not for managing object availability across data spaces.

1. Salesforce Help, Data Cloud, "Manage Data in a Data Space". This document details the procedure: "From the Data Spaces tab, select a data space...Click Edit...To add an object, select it from the list of available objects and click the right arrow."

2. Salesforce Help, Data Cloud, "Considerations for Data Spaces". This guide notes, "When you create a data stream, its DLO is only available in the default data space. To make it available in another data space, add it to the data space."