Mastering WMS Outbound: 8 Common Shipping Types & Step‑by‑Step Process

Common WMS Outbound Types

Sales outbound (customer order outbound) : processes customer purchases, links to sales orders, performs wave picking, intelligent routing, supports split/combined shipments, matches logistics carriers, generates waybills, deducts inventory, updates order status to “shipped”.

Return to supplier outbound : returns defective, slow‑moving or contract‑exchange goods to suppliers, creates purchase return orders, triggers supplier refund or exchange.

Transfer outbound : moves goods between warehouses or zones, generates transfer documents, updates inventory in both source and destination.

Store replenishment outbound : stores request replenishment from regional warehouses; system creates pick tasks, includes store code, location, delivery window for quick shelving.

Production material outbound : supplies raw materials to internal production lines according to BOM, deducts raw material inventory.

Outsourced processing outbound : ships raw or semi‑finished material to third‑party factories; status changes to “in outsourcing”, linked to work orders, later triggers “outsourced inbound”.

Cross‑dock direct outbound : after receipt, goods skip storage, are directly sorted, assembled, and shipped downstream.

Special outbound : includes sample, gift, scrap, internal use, etc.

WMS Outbound Process

1. Order receipt and dispatch

WMS receives instructions from ERP, e‑commerce platforms, OMS, or other upstream systems (sales orders, transfer orders, return orders). The request contains customer info, address, product details, quantities, batch requirements, packaging, delivery time, carrier, etc. Orders are validated against inventory, priority, credit, etc., and approved orders are dispatched to the warehouse execution layer.

2. Inventory allocation and location confirmation

Based on strategies such as FIFO, FEFO, batch, specific location, or attribute‑based rules, WMS assigns concrete inventory sources (warehouse, SKU, batch/serial, quantity) to each order. Allocation locks the stock to prevent overselling.

3. Wave planning

Multiple orders are grouped into waves according to priority, delivery commitments, picking method, customer tier, carrier, etc., to reduce picker travel distance and improve efficiency.

4. Picking

Pickers follow wave tasks, scan assigned location tags and product barcodes, the system verifies correctness and prompts required quantities.

5. Verification and packaging

After picking, items are moved to a verification station where staff scan product, quantity, and batch to match the order, then pack according to system‑specified packaging type and size, and attach shipping labels.

6. Consolidation and shipping

Packed parcels are sent to the shipping area, sorted by carrier, destination, or route, and handed over to the carrier or internal transport. Operators scan consolidation tags or each parcel; the system records loading details (e.g., vehicle, driver).

7. Document status and inventory update

Once shipped, WMS immediately deducts the shipped quantity from inventory, updates the outbound order status to “shipped”, and returns shipping information (tracking number, parcel details, actual ship time) to ERP/OMS.