Exact columns for every import.
products: sku, name, category, type (make|buy), uom, price, moq, lot_size, lead_time_days. locations: code, name, kind (plant|pdc|dc). inventory: sku, location, on_hand, on_order. demand: sku, location, period (YYYY-MM), qty. Headers are required; extra columns are ignored; rejected rows are reported with line numbers and reasons. Download ready-made templates from Data & Import.