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Fashion Supply Chain Visibility: End-to-End Control From Sourcing Through Distribution and Retail
If you run a fashion brand, your real job is not placing POs. It is keeping promises. Promises to retailers about ship windows, to DTC customers about delivery dates, and to finance that margin will hold after freight, duty, and everything that happens between cutting and customs. This is how AIMS360 connects demand to supply at every stage so those promises hold.
By Shahrooz "Shawn" Kohan, CEO and Co-Founder, AIMS360. Published June 13, 2025. Updated September 2026.
Supply chain visibility in fashion means knowing what will be available to sell and when, not just what is in the building today. That takes four things in one system: on-hand stock, Work In Process in production, confirmed inbound vendor POs with ETAs, and everything already committed to other channels.
AIMS360 holds the style, the vendor PO, production, inbound freight, warehouse and 3PL stock, every sales channel, returns, and the accounting sync in one database. A unit can be traced from the material on a vendor PO, through cutting and sewing, into a warehouse or 3PL, out to a wholesale order, dropship, or DTC shipment, and back again if it is returned, with landed cost attached the whole way.
Where visibility breaks, stage by stage
Most brands do not lose track of inventory in one place. They lose a little at each handoff, and the gaps compound. Here is the full chain and what has to be true at each stage.
Product development
Style master with versions, BOM (fabrics, trims, labels), graded specs and tolerances, fit notes, artwork placement, packaging, and revision history. Tech packs are authored in design tools and stored against the style.
Sourcing and vendors
Vendor selection on capacity, on-time delivery history, quality results, compliance grade, and cost. POs carry size and color breakdowns, pack instructions, HTS and country of origin, and carton labeling standards.
Production and WIP
Milestones from materials in-house through cutting, sewing, finishing, and packing. Multi-stage QC: pre-production material checks, in-line inspections, final AQL, and receipt QC. Vendor scorecards combine on-time delivery, defects, short-ships, and audit results.
Costing and landed cost
Estimated versus actual at every stage: pre-production estimate from PLM, PO-level cost sheet with freight and duty scenarios, landed cost on receipt for COGS and margin, then variance analysis on labor hours, scrap, rework, and short-ships.
Inbound logistics
Mode planning (ocean versus air) with lead-time and cash implications. ETD and ETA, on-water, customs, drayage, receiving. ASNs so the DC is ready before the truck arrives.
Warehouse and 3PL
Receipt, put-away, pick, pack, ship across your own DC and any number of 3PLs, with live stock counts flowing back into one inventory number.
Channels and allocation
Wholesale, EDI dropship, DTC, marketplaces, and distributors drawing on the same pool, with channel priorities so one channel cannot quietly starve another.
Returns and reverse logistics
RMA workflow: inspect, restock, repair, or scrap, with cost captured and tied back to the vendor batch when defects repeat. Returns analytics feed the fit loop.
Finance and analytics
Invoices, credit memos, card payments, RMAs, and rep commissions sync to accounting, so supply chain events land in real margin. Dashboards on OTD, lead-time variance, cost variance, turns, and channel profitability.
Most ERPs stop at on-hand. This is the part that matters
When a wholesale order lands for units you have not made yet, the question is whether the system can promise a date. AIMS360 reserves down three layers:
1. On-hand
Allocate and ship. Every ERP does this part.
2. Work In Process
Reserve against production orders so sales cannot double-sell units that are still on a cutting table.
3. Inbound vendor PO
When stock and WIP cannot cover demand, reserve orders directly against confirmed POs with ETD, ETA, and origin. When the PO receipts, allocations release to inventory and the order is pick-ready.
What this buys you: accurate promise dates, cash-flow forecasting tied to real inbound supply, fewer phantom quantities across channels, and dynamic reallocation when a PO ETA slips or a shipment comes up short.
Every channel draws on the same pool
Each channel buys differently and costs differently, but they all reduce the same inventory number. Treating them as separate pools is how brands oversell.
| Channel | Who buys | Flow | Cost factors |
|---|---|---|---|
| Wholesale | Retailer | Issue PO, produce, receive, invoice the retailer | Unit cost, freight to brand, retailer margin |
| EDI dropship | Retailer sends consumer orders | Reserve against stock, WIP, or PO, then ship to the consumer | Dropship fees, parcel, compliance chargebacks |
| DTC (Shopify) | Consumer | Reserve, then pick, pack, ship from DC or 3PL | Parcel, returns, acquisition cost |
| Marketplaces | Consumer via platform | Supply inventory, platform sends orders | Marketplace fees, prep, shipping |
| Distributor or franchise | Distributor buys bulk | Issue PO, ship to distributor, track sell-through | Freight to distributor, distributor margin |
Overselling is a visibility problem, not a discipline problem
Teams do not oversell because they are careless. They oversell because the number in front of them was already wrong. Five things fix it:
- Aggregate demand from EDI, Shopify, marketplaces, and B2B against one pool
- Set channel priorities, for example EDI before prebooks before DTC before marketplaces
- Use real lead times to compute reorder points and safety stock
- Alert when projected availability will breach before the vendor lead time closes
- Reallocate automatically when a PO is delayed in customs rather than discovering a stockout at pick time
Running your own DC, several 3PLs, or both
The ERP stays the system of record. Each warehouse and 3PL reports in through EDI or API, and the ERP reconciles them into one inventory number. That is what lets you add a 3PL without picking one of them as the source of truth.
| Document | Name | Direction |
|---|---|---|
| EDI 940 | Warehouse shipping order | ERP to 3PL |
| EDI 945 | Warehouse shipping advice | 3PL to ERP |
| EDI 943 | Stock transfer shipment advice | ERP to 3PL |
| EDI 944 | Stock transfer receipt advice | 3PL to ERP |
| EDI 947 | Warehouse inventory adjustment | 3PL to ERP |
| EDI 846 | Inventory inquiry and advice | 3PL to ERP |
| EDI 856 | Advance ship notice | 3PL to ERP, or ERP to retailer |
| EDI 997 | Functional acknowledgment | Both directions |
AIMS360 integrates with 3PLs including Bergen Logistics, Extensiv, and Scale3PL. See all 3PL integrations. For how 3PL fulfillment works end to end, including costs, garment on hanger, EDI bulk versus dropship, and how to choose a provider, read the 3PL warehousing and fulfillment guide.
Margin that survives freight and duty
Cost gets captured three times, and the gaps between them are where margin quietly disappears.
Pre-production, from PLM
Materials, labor, overhead, packaging, and freight assumptions flow forward from the style record into the PO and margin analytics.
PO-level cost sheet
Freight, duty scenarios, and surcharges attached to the purchase order, with country of origin and HTS on the line.
Landed cost
Actual freight, duty, brokerage, and inland cost applied on receipt, feeding COGS and real margin rather than an assumption.
Origin, factory, and compliance on the record
Traceability is not a separate system. It is fields on the records you already keep.
- Origin, factory, and tier-2 material data carried on the style and PO
- HTS and country of origin on the line, feeding customs documentation
- Audit grades and corrective actions tied to the vendor record
- Vendor scorecards combining on-time delivery, defects, short-ships, and audit results
- Returns analytics that connect repeat defects back to the vendor batch
Supply chain visibility questions brands ask
Direct answers on sourcing, allocation, 3PLs, and landed cost.
Yes. AIMS360 holds the style, the vendor PO, production and Work In Process, inbound freight, warehouse and 3PL stock, every sales channel, returns, and the accounting sync in one database. Because it is one system rather than several connected ones, you can trace a unit from the material on a vendor PO through cutting and sewing, into a warehouse or 3PL, out to a wholesale order, EDI dropship, or DTC shipment, and back again if it is returned. That includes landed cost, so the margin on that unit reflects freight and duty rather than an estimate.
One inventory number is shared by every channel and location, and it accounts for three layers: on-hand stock, Work In Process in production, and confirmed inbound vendor POs. Sourcing data (vendor, factory, country of origin, HTS code, cost assumptions) lives on the same style and PO records, so allocation, promise dates, and margin all read from the same source.
Inventory tracking answers what is in the building right now. Supply chain visibility answers what will be available to sell and when, which requires production status, inbound purchase orders with ETAs, allocations already committed to other channels, and returns coming back. A system that only tracks on-hand stock will let you promise units you do not have.
Yes. You can run your own DC alongside any number of 3PLs, in different countries, and see and allocate stock across all of them from one place. Orders route automatically based on your rules, and each location reports back through EDI or API so the ERP stays current.
The warehouse set: 940 shipping order out to the 3PL, 945 shipping advice back, 943 and 944 for stock transfers out and in, 947 for inventory adjustments, 846 for inventory advice, 856 for advance ship notices, and 997 acknowledgments in both directions. Integrations also run over API where the 3PL supports it.
Yes. Cost is captured at three points: the pre-production estimate from PLM, the PO-level cost sheet with freight and duty scenarios, and landed cost on receipt. Variance analysis then compares them, so you can see where the estimate was wrong before the season ends.
Overselling is a visibility problem. AIMS360 aggregates demand from EDI, Shopify, marketplaces, and B2B against one inventory pool, applies channel priorities you set, reserves stock, WIP, and inbound POs to specific orders, and alerts when projected availability will run short before the next vendor lead time. If a PO is delayed in customs, allocations can be reassigned rather than discovered as a stockout.
Yes. The 3PL knows what is in its own building. It does not know what is in production, what is on the water, what is committed to a wholesale order shipping next month, or what a unit really cost after duty. The ERP is the system of record that reconciles all of it, and it is what lets you run more than one 3PL without picking one of them as your source of truth.
Sourcing has shifted. U.S. buyers moved volume out of China toward Vietnam, Bangladesh, India, and Mexico as tariffs rose, and Southeast Asia picked up much of that share. Because the mix keeps moving, the practical answer is to tag every PO by country and factory and carry duty assumptions in the cost sheet, so margin stays honest at order time rather than at receipt. For current figures, pull the monthly OTEXA dataset.
Most brands phase it: inventory and orders first, then channels and EDI, then warehouse and 3PL flows, then production and WIP, then allocation and forecasting. Early phases deliver usable visibility within the first few months while later ones are still being configured.
See your own supply chain in one system
Bring a style, a vendor PO, and a wholesale order. We will walk the unit from sourcing through production, warehouse, channel, and returns, with landed cost attached.
