01
Company
The maker or importer — name, NTN, type. Needs nothing else to exist.
COM-0001 · Company A
02
Add supplier
Who delivers — city, contact, ordering days, lead time, payment terms. Linked to one or more companies.
SUP-ISB-00001 · Shakeel
03
Add item
What is bought — unit, category. Then attach company + supplier with a price: one item, many sources.
ITM-000001 · Beef mince · KG