S&OP and IBP Overview — Quality Cannot Be Absent in Sales and Operations Collaboration
Abstract: S&OP (Sales and Operations Planning) and IBP (Integrated Business Planning) are high-level rhythms that connect demand, supply, and finance. If quality management only focuses on firefighting after the fact, it will be passively hit during order insertion, order cancellation, and production adjustments. This article provides an overview of the S&OP/IBP meeting rhythms and the quality function's inputs and guardrails in sales and operations collaboration.
1. Why Quality Must Be Part of S&OP
At the end of the month, a company rushes to meet a 30% increase in sales orders, planning to produce overnight—changeover is compressed, inspection manpower is insufficient, and outsourced parts skip PPAP for expedited delivery. The delivery meets the target, but customer complaints surge in the following month.
The essence of S&OP is balancing quantity and resources; without quality input, this balance will sacrifice process capability for short-term shipments.
2. What Are S&OP and IBP?
S&OP (typically monthly):
- Demand planning (sales forecast)
- Supply planning (production capacity, inventory, procurement)
- Supply and demand balance and gap decision-making
- Financial impact (revenue, cost, profit)
IBP (an extension of S&OP):
- Closer integration of strategy, product, and finance
- Cross-functional high-level decision-making with a longer time horizon
For the manufacturing quality department, both can be understood as: quality risks must be visible before formally committing to delivery dates.
3. Typical Five Steps of S&OP (Monthly Cycle)
| Step | Content | Quality Input |
|---|---|---|
| 1 Data Collection | Forecast, inventory, capacity | Quality KPIs, OEE, customer complaint trends |
| 2 Demand Planning | Sales version | Special order CSR, certification constraints |
| 3 Supply Planning | Production/procurement plan | Capacity and changeover loss, inspection capability |
| 4 Pre-Review Meeting | Supply and demand gap solutions | Quality risk list (see below) |
| 5 Executive S&OP | Decision-making and commitment | Exception approval records |
4. Quality's "Guardrails" in S&OP
Restrictions to be declared in advance:
- Critical equipment PM window, non-compressible
- Maximum number of changeovers (still physical limits after SMED)
- Maximum throughput of inspection/laboratory
- New suppliers/new production lines not PPAP approved cannot be mass-produced
- Regulatory inventory and traceability batch requirements
Exception process: Emergency order insertion must go through quality assessment—can CP be maintained? Should inspection be tightened? Is there written customer approval?
This aligns with 3.4.3 Exceptions and Escalations and 8.4 Change Management.
5. Quality KPIs in the S&OP Package
It is recommended to include the following monthly:
- OTD vs quality cost (not just OTD)
- FPY/RPY trends (3.3.2)
- Customer complaints/warranty (10.2.1)
- Supplier quality performance (9.1.3)
- Number of open major CARs
This allows executives to see: order insertion is not free—it may come at the cost of Ppk, overtime, and rework.
6. Relationship with Operational Planning
4.1.1 Annual Business Plan and Quality Goals Alignment is at the annual level; S&OP is a monthly/weekly rolling alignment—quality goals must be broken down into S&OP constraints, rather than being reviewed only at the end of the year.
7. Conclusion
S&OP/IBP is not just a matter for sales and planning—quality is one of the true boundaries of supply capability.
Speaking up in advance at the sales and operations collaboration table is much cheaper than explaining customer complaints after shipping.
Knowledge code: 4.2.1
Version: v20260527
Author: Quality Think Tank