# Concept: Commodity Trading — Variant 47

(Variant for commodity_trading domain)

## Background
When acquiring a company, vendor records must be consolidated across
the procurement and AP systems of both organizations.

## Consolidation Rules
1. Match vendors by Tax ID / VAT number first (most reliable)
2. If Tax ID matches: merge records, keep acquirer's vendor ID
3. If Tax ID not available: match by name + address + bank details
4. Never merge vendors with different Tax IDs, even if same name
5. Create alias records for old vendor IDs (preserve audit trail)

## Post-Merger Checklist
- [ ] Export all vendor records from both systems
- [ ] Run automated matching on Tax ID
- [ ] Manual review of name-only matches
- [ ] Create mapping table (old ID → new ID)
- [ ] Update all open POs and contracts
- [ ] Notify AP team of merged vendors