Which master data taxonomies are essential to standardize entries in a carbon le

Establish a controlled glossary backed by master data for: organizational hierarchy (legal entities, sites), operational assets (plants, lines, vehicles), processes (combustion, refrigeration, logistics), activity categories (GHG Protocol categories), suppliers/customers, products/SKUs, and geographies (country, subnational grid regions). Maintain reference lists for fuel types (per IPCC), refrigerants (per IPCC/AR5 GWP), electricity market regions (EPA eGRID/NERC), transport modes, waste types, and purchased goods categories. Each taxonomy should have IDs, names, effective dates, and parent-child relationships. Include emisson factor catalogs with versioning and provenance (standard, dataset URL, publication date) and units libraries with conversion factors. Map to external codes where possible (e.g., UNSPSC, NAICS) to ease Scope 3 supplier integration. Govern changes through a data steward council; require change requests, approvals, and impact assessments before altering hierarchies to prevent orphaned ledger entries. Centralizing these taxonomies ensures consistent posting, facilitates eliminations, and supports audit traceability across reporting periods. Key Takeaway: Curate versioned, governed taxonomies for org, assets, activities, and factors to guarantee consistent posting and traceable reporting in the carbon ledger.