SAP EWM Wave Management: Wave Creation and Picking Optimization

SAP EWM Wave Management is a critical function that optimizes picking processes in high-volume outbound operations. A wave ensures that outbound delivery orders grouped by specific criteria are processed as a single batch job. Through configured wave templates, intelligent wave release criteria, and warehouse order creation rules, EWM maximizes picking efficiency while automating workforce distribution. In this guide, we cover the steps to configure wave setup from scratch, release criteria, and batch picking setup.

What Is Wave Management and Why Does It Matter?

A wave is a logical group of outbound delivery orders to be processed within the same time window. Without waves, each delivery document is processed separately; this leads to increased picking distances, difficulty in team coordination, and missed shipping time targets.

Advantages of Wave Management:

• Single picking tour for multiple orders in the same aisle (batch picking)
• Automatic grouping based on shipment time windows
• Optimization of resource (picker and forklift) distribution
• Reduction of warehouse order count and load balancing

Wave Management is one of the features included within Embedded EWM Basic scope and expands with more advanced rule engines in Advanced EWM.

Wave Template: The Core of Waves

A wave template is the blueprint where you define which outbound delivery orders fall within the wave scope and what the release conditions are.

SPRO Configuration Step

SPRO path: SCM Extended Warehouse Management → Extended Warehouse Management → Goods Issue Process → Waves → Define Wave Templates

When creating a new wave template, the following fields are filled in:

• Wave Template ID and Description: For example WT001 – “Standard Outbound Wave”
• Warehouse No: The warehouse number to which waves will be applied
• Wave Type: In most scenarios, “Manual” or “Automatic” is selected
• Planning Horizon: The time window (in hours ahead) in which orders to be included in the wave are searched
• Maximum Number of Deliveries per Wave: Maximum number of delivery documents to be processed in a single wave
• Max. Number of Warehouse Orders per Wave: Warehouse order capacity

Filter Criteria for the Template

Which delivery documents are included in the wave is determined by filter criteria. Example criteria:

• Shipping Point
• Goods Issue Date
• Delivery Priority
• Route or Carrier
• Storage Type (Picking area)

Wave Release Criteria: When Does It Open?

Wave release means all warehouse orders in the wave are released for picking. Release criteria determine when and under what conditions this moment arrives.

Manual Release

After the warehouse planner creates the wave, they manually release it through the Fiori app or via transaction /SCWM/WAVE. This is preferred for low-volume operations or critical shipments.

Automatic Release (Time-Based)

SPRO path: … → Waves → Define Automatic Wave Release

Scheduling rules for automatic release are defined. For example, the wave can automatically be released every day at 06:00, 10:00, and 14:00. This provides continuous flow without requiring the warehouse planner’s intervention.

Automatic Release (Rule-Based)

In more advanced scenarios, wave release can be conditioned on certain conditions being met:

• When stock is available for all deliveries in the wave
• When the number of deliveries included in the wave exceeds a certain threshold
• X hours before a specific shipment date

Warehouse Order Creation Rules

Warehouse order creation rules determine how warehouse tasks are grouped and converted into warehouse orders. These rules directly affect picking efficiency.

SPRO Configuration Step

SPRO path: … → Warehouse Order → Define Warehouse Order Creation Rules

Rule parameters:

• Grouping Criteria: Tasks using the same picking area (storage section), same product group, or same picking cart can be grouped
• Max. Number of Warehouse Tasks per Warehouse Order: Maximum number of tasks that can fall in a single warehouse order. Setting it too high can increase the loads a picker carries in a single trip
• Warehouse Order Type: Picking, replenishment, or transfer?
• Activity Area Assignment: Which physical picking area will be worked in

Example Scenario

In a wave with 200 outbound delivery orders:

1. Each delivery generates multiple warehouse tasks
2. The warehouse order creation rule groups tasks in the same aisle under a single warehouse order
3. The warehouse order assigned to each picker can be completed in a single aisle tour
4. Total picking travel distance can decrease by 30–45%

Batch Picking Setup

Batch picking is when a picker picks for multiple orders in a single trip. In EWM, this function is naturally supported through the warehouse order structure and becomes more effective with specific settings.

Setup Steps

Step 1: Picking Cart or Tote Configuration
For batch picking, the picker’s physical transport device (cart, tote, basket) must be introduced to the system. The capacity of this device limits which order group can be processed in a single trip.

Step 2: Connection with Warehouse Order Grouping Rule
In the warehouse order creation rule defined above, batch picking is enabled by selecting Pick Cart / Delivery Combination as the grouping criterion.

Step 3: RF Terminal Integration
When the picker opens a warehouse order on the RF terminal, the system shows which tote to place which goods in. After each pick, the tote number is confirmed; this prevents order mix-ups.

Wave Monitoring: Real-Time Tracking with Fiori Apps

Main Fiori apps used to monitor waves in EWM:

• “Monitor Outbound Delivery Orders”: See which delivery documents are in the wave
• “Manage Warehouse Orders”: Track open warehouse orders, assigned resources, and progress percentage
• “Monitor Waves”: Track wave status (created, released, partly confirmed, confirmed)

In EWM installations integrated with robotic systems, wave monitoring becomes a critical tool for evaluating automation system efficiency in real time.

Frequently Asked Questions (FAQ)

Can picking be done in EWM without waves?

Yes. Waves are not mandatory in EWM; separate warehouse orders can be created for each delivery. However, not using waves outside of low-volume warehouses causes capacity waste, long picking times, and increased warehouse planner workload.

Can a new delivery document be added after a wave is created?

Yes, before the wave transitions to “Released” status. After release, it is not possible to add new documents to the existing wave; a new wave must be created.

What happens if stock is insufficient during wave release?

EWM blocks warehouse tasks with insufficient stock or moves them to a separate “backorder” group. Planners can track these documents through Warehouse Management Monitor (/SCWM/MON) and initiate replenishment or stock transfer.

Conclusion: Wave Configuration Is the Determinant of Picking Efficiency

SAP EWM Wave Management, when correctly configured, has the power to transform warehouse operations. When precise wave template criteria, intelligent release rules, and effective warehouse order creation rules combine, picking times shorten, error rates drop, and shipping schedules improve.

MDP Group’s EWM consultants are ready to design a customized wave architecture according to your warehouse’s flow volume and shipment types.

References

SAP Help Portal – Extended Warehouse Management for S/4HANA
MDP Group – SAP WM or EWM? Choosing the Right Warehouse Solution
MDP Group – How to Configure Putaway Strategies in SAP EWM

Birsu Küçükyılmaz

SAP EWM Consultant