ERP sebagai Backbone Supply Chain
Supply Chain Management (SCM) mengoordinasikan aliran barang, informasi, dan uang dari supplier ke customer. ERP adalah system of record yang menyediakan visibilitas, kontrol, dan otomatisasi end-to-end supply chain.
Modul SCM Kunci dalam ERP
1. Procurement & Sourcing (Beli)
- Purchase Requisition → RFQ → PO: Workflow approval, vendor comparison, contract pricing
- Vendor Management: Kualifikasi, performance scorecard (OTIF, kualitas, lead time), risk assessment
- Blanket PO & Release: Kontrak volume tahunan dengan release order berkala
- Three-Way Matching: PO – Goods Receipt – Invoice = otomatis validasi sebelum bayar
- Strategic Sourcing: Spend analysis, category management, e-auction, make vs buy
2. Inventory Management (Persediaan)
- Multi-Warehouse/Lokasi: Gudang pusat, cabang, consignment, transit, virtual warehouse
- Lot/Serial Tracking: Traceability penuh (forward/backward) untuk recall, warranty, expiry
- ABC/XYZ Classification: Prioritaskan A-items (high value), X-items (stable demand)
- Reorder Point & Safety Stock: Otomatis hitungROP berbasis lead time variability & service level target
- Cycle Count & Physical Inventory: Jadwal count berkala, adjustment workflow, variance analysis
- Inventory Valuation: FIFO, LIFO, Weighted Average, Standard Cost – GAAP/PSAK compliant
3. Warehouse Management (WMS) – Advanced
- Directed Put-away: Sistem suggest lokasi optimal (velocity, size, weight, zone)
- Wave & Batch Picking: Konsolidasi order, route optimization, pick-to-light/voice
- Packing & Shipping: Cartonization, label printing (SSCC/GS1), carrier integration (JNE, J&T, Ninja, dll)
- Cross-docking: Receive → Ship langsung tanpa put-away (untuk fast-moving)
- Returns Management: RMA workflow, inspection, restock/refurbish/scrap decision
4. Demand Planning & Forecasting
- Statistical Forecasting: Moving average, exponential smoothing, ARIMA, Prophet, ML-based
- Collaborative Planning (CPFR): Share forecast ke supplier & customer, adjust bersama
- Promotion & Seasonality Modeling: Baseline + uplift factor untuk promo, hari raya, musim
- New Product Introduction (NPI): Forecast by analogy, phase-in/phase-out curves
- Forecast Accuracy Tracking: MAPE, WMAPE, Bias → continuous improvement loop
5. Logistics & Transportation
- Route Optimization: Multi-stop, time window, capacity constraint, cost minimization
- Freight Management: Carrier selection, rate negotiation, freight audit & payment
- Track & Trace: GPS integration, proof of delivery (ePOD), exception alert
- Last-Mile Delivery: Dispatch, driver app, customer notification, return pickup
KPI Supply Chain yang Harus Dilacak di ERP
| KPI | Formula | Target Umum |
|---|---|---|
| Inventory Turnover | COGS / Avg Inventory | > 6x/tahun (manufaktur), > 12x (ritel) |
| Days Inventory Outstanding (DIO) | Avg Inventory / COGS × 365 | < 60 hari |
| Fill Rate / OTIF | Order fulfilled on-time in-full / Total order | > 98% |
| Perfect Order Rate | On-time, complete, undamaged, right doc | > 95% |
| Supplier OTIF | PO delivered on-time in-full / Total PO | > 95% |
| Forecast Accuracy (MAPE) | Mean Absolute Percentage Error | < 20% (aggregate), < 10% (top items) |
| Carrying Cost % | Inventory carrying cost / Avg Inventory Value | 15-25% per tahun |
| Cash-to-Cash Cycle | DIO + DSO – DPO | < 90 hari |
Integrasi Supplier & Customer (Extended Supply Chain)
- Supplier Portal: PO acknowledgment, ASN (Advance Ship Notice), invoice submission, performance dashboard
- Customer Portal / VMI: Customer lihat stok & order, Vendor Managed Inventory (supplier kelola stok di lokasi customer)
- EDI / API Standards: ANSI X12, EDIFACT, GS1 EPCIS, Peppol (e-invoicing)
- Blockchain/Traceability: Provenance tracking (halal, organic, conflict minerals, carbon footprint)
Kesimpulan
ERP mengubah supply chain dari reactive (kejar-kejar stok) menjadi proactive (predict & optimize). Kunci: data master bersih (item, vendor, BOM, routing), proses standar (PO-GR-Invoice, Pick-Pack-Ship), KPI visible ke manajemen, dan continuous improvement loop (forecast → actual → adjust). Integrasi extended supply chain (supplier portal, customer portal, VMI) menciptakan ekosistem kolaboratif yang mengurangi bullwhip effect dan meningkatkan resilience.
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