A modern 3PL warehouse management system needs to do more than track inventory — it needs to manage multiple customers, warehouse operations, orders, fulfillment, shipping, billing, integrations, and customer visibility from a single platform.
3PLSmart combines these capabilities into one platform so 3PL operators can manage their warehouse and customer operations without relying on multiple disconnected systems.
Manage the customers who use your warehouse and the products they store — the foundation of every 3PL operation.
A single warehouse can hold inventory for dozens or hundreds of customers, each kept separated and visible.
One place to manage each 3PL account and its associated operations.
Manage products and SKUs for each customer with the detail fulfillment depends on.
From the moment inventory arrives to the moment it's shelved, the WMS keeps a structured, traceable record.
Manage inbound inventory from arrival through storage.
Know exactly where inventory is stored, down to the bin.
Track inventory as it moves from receiving into its designated storage location.
Inventory that belongs to different customers needs to be visible, trustworthy, and easy to reconcile.
Visibility into inventory by customer, SKU, warehouse, location, lot, and status.
A recorded, auditable trail of every change to inventory.
Maintain warehouse accuracy without stopping normal operations.
From order intake to the packed box — the core fulfillment engine of a 3PL warehouse.
Every order gets tied to the right customer, inventory, and fulfillment workflow.
Clear picking instructions for warehouse workers, with barcode verification.
Group work to reduce travel time and improve picking efficiency.
Verify the order before it moves into the shipping workflow.
Connect physical warehouse activity with digital inventory records.
Get the shipment out the door — and handle what comes back.
Manage the shipment from carrier selection through delivery confirmation.
Receive returned products and determine their next status without losing them from inventory.
Customers need visibility into their own operations — without calling your warehouse team.
Direct customer access to relevant operational information, reducing repetitive status requests.
The WMS connects outward — to sales channels, internal systems, and B2B trading partners.
Synchronize products, orders, inventory, and tracking between platforms and the WMS.
Connect the WMS to ERP, e-commerce, marketplace, or internal applications.
EDI allows trading partners to exchange structured business documents with the warehouse system.
| EDI Code | Common Purpose |
|---|---|
| 940 | Warehouse Shipping Order |
| 945 | Warehouse Shipping Advice |
| 943 | Warehouse Stock Transfer Shipment Advice |
| 944 | Warehouse Stock Transfer Receipt Advice |
| 846 | Inventory Inquiry/Advice |
| 850 | Purchase Order |
| 855 | Purchase Order Acknowledgment |
| 856 | Advance Ship Notice |
| 810 | Invoice |
The business layer that makes the WMS your billing system, your reporting system, and your access-control layer too.
Customer-specific rate cards, driven by real warehouse activity.
Visibility into warehouse performance and customer operations.
Role-based access, with customer users scoped to only their own data.
Web-based access without maintaining traditional on-premise infrastructure.
AI helps users interact with operational information more naturally — not replace warehouse processes.
A good 3PL WMS should connect these features into a single, cohesive operational workflow.
The platform should be designed around managing multiple customers and their inventory.
Warehouse activity should be reflected accurately in the system.
Connects with customer systems, e-commerce platforms, carriers, APIs, and EDI.
Customers get the information they need without depending entirely on staff.
Different customers should be able to have different billing arrangements.
Supports a 3PL as it adds customers, inventory, orders, and warehouses.
Warehouse workers complete tasks quickly without unnecessary complexity.
Before selecting a WMS, 3PL operators can use this checklist to ensure all essential requirements are addressed.
| Feature | Why It Matters |
|---|---|
| Multi-client management | Manage multiple customer operations |
| Customer inventory | Keep inventory associated with the correct owner |
| Receiving | Process inbound inventory |
| Putaway | Organize received inventory |
| Warehouse locations | Know where inventory is stored |
| Picking | Guide warehouse fulfillment |
| Batch/Wave picking | Improve warehouse efficiency |
| Packing | Verify and prepare orders |
| Shipping | Process carrier shipments |
| Tracking | Provide shipment visibility |
| Returns | Process returned inventory |
| Barcode scanning | Reduce warehouse errors |
| E-commerce integrations | Receive online orders |
| API | Connect customer systems |
| EDI | Support B2B trading partners |
| Customer portal | Provide customer visibility |
| Billing | Charge customers for services |
| Reporting | Monitor operations |
| Cloud access | Simplify system access |
| AI assistance | Help users understand operational data |
Instead of managing separate systems for inventory, orders, shipping, customer access, and billing, 3PLSmart provides a centralized platform designed around the requirements of third-party logistics operations.
Whether you're launching a new fulfillment operation, replacing spreadsheets, or modernizing a legacy WMS, 3PLSmart provides the foundation for managing modern 3PL operations.
A 3PL WMS should include multi-client management, inventory management, receiving, putaway, warehouse locations, picking, packing, shipping, returns, customer portals, billing, integrations, APIs, EDI, reporting, and operational tools.
Multi-client management is one of the most important capabilities because 3PLs manage inventory and fulfillment for multiple customers. The WMS must keep customer inventory, orders, billing, and operational data properly associated with each customer.
Many B2B-focused 3PLs need EDI because their customers and trading partners may use EDI to exchange orders, shipment information, inventory information, and invoices.
An API is important for connecting the WMS to customer systems, e-commerce platforms, marketplaces, ERP systems, shipping services, and custom applications.
A 3PL WMS can include billing capabilities for services such as storage, receiving, picking, packing, shipping, returns, and special handling. Customer-specific rate cards allow different customers to be charged according to their agreements.
A modern 3PL WMS can support multiple warehouse locations and provide visibility across the warehouse network. The exact capabilities depend on the platform and configuration.
Barcode scanning connects physical warehouse activity with digital inventory records. It can help verify products, locations, receiving, picking, packing, and inventory counts while reducing manual entry.
A 3PL WMS generally covers the broader warehouse operation, including receiving, inventory, locations, picking, packing, shipping, and customer management. Fulfillment software focuses primarily on processing customer orders from order receipt through shipment. Many modern platforms combine both capabilities.
Cloud-based WMS platforms can provide web access, centralized updates, easier integration with modern services, and customer-facing portals without requiring the 3PL to maintain traditional on-premise infrastructure.
Yes. A modern WMS can replace a legacy system, but migration should be carefully planned — accounting for customers, products, inventory, locations, open orders, billing, integrations, EDI, workflows, and historical data.
A modern 3PL WMS should connect your warehouse operations, customers, inventory, orders, fulfillment, shipping, integrations, and billing in one place.