1000 none Source System Registry of upstream contributing systems, authority scopes, and boundaries. /source_system_id ${./system_name} (${./source_system_id}) System Code Unique technical identifier for the source system (e.g. CRM, ERP, Commerce). System Name Human-readable system label. Authority Scope Declared business authority domain (e.g. Orders, Customer Loyalty, SKU Lifecycle). Customer Northstar customer records across source systems and mastered candidates. /customer_id ${./name} (${./email}) Customer ID Unique internal customer entity identifier. Source System Originating system reference. /root/SourceSystem Source System ID Identifier in the contributing system (e.g. C-1007, WEB-882). Customer Name Full name of the customer. Email Address Primary contact email address. Country Country code or representation. Loyalty Tier Customer loyalty tier designation. Product Northstar product catalog items across ERP, PIM, and Commerce. /product_id ${./product_name} (${./sku}) Product ID Unique internal product entity identifier. Source System Originating catalog or system reference. /root/SourceSystem Source System ID Identifier in the contributing system (e.g. P-200, 7781). SKU Stock Keeping Unit code. Product Name Official product title. Status Lifecycle status (e.g. Active, Discontinued). Category Catalog classification hierarchy.