# Cross-System Product Matching Procedure

## Steps
1. Extract product records from both source systems
2. Normalize product names (remove system-specific prefixes, standardize units)
3. Compare key attributes: category, sub_category, grade, concentration
4. Apply fuzzy matching on normalized names (threshold: 0.7)
5. For matches above threshold, verify with attribute comparison
6. For ambiguous cases (0.5-0.7), escalate to domain expert
7. Document decision and update mapping table

## Key Discriminators
- Product grade (Food vs Technical vs USP)
- Concentration/DE values
- Source vs processed form (crude vs refined)
- Regional naming conventions (German vs English vs abbreviated)

## Escalation Criteria
- String similarity < 0.5 but attributes match
- String similarity > 0.7 but attributes conflict
- Legacy system codes with no clear mapping