Picking Materials for Outbound Deliveries


After completing this lesson, you will be able to:

  • Work with waves
  • Create pick handling units
  • Work with exceptions


Characteristics of Waves

Waves are a way of grouping outbound delivery order items, to control warehouse activities such as picking.

See the following video to learn more about waves in a warehouse:

Assignment of Items to Waves

One way of creating waves is to manually select items and to combine them to a wave.

Another way to create waves is the automatic creation of the waves using so-called wave templates and condition records for the determination of these wave templates. In this determination process, information can be used from the items to determine the proper wave template and to combine the items in the desired way.

Warehouse Tasks for Outbound Delivery Orders

See the following video where Maria explains warehouse task creation for picking:

Warehouse Order Creation Rules

Warehouse Orders

In the following video, Maria discusses warehouse orders during outbound processing:

Warehouse Order Creation Rules

During the grouping of warehouse tasks into warehouse orders, SAP EWM can use one directly assigned warehouse order creation rule, or it uses a search sequence for several warehouse order creation rules. An example could be: rule A, then rule B, then rule C. The sequence is defined and assigned to the so-called activity area to which the selected storage bin for picking belongs. Customizing controls which storage bins (and thus which activity areas) are being considered during picking.

Filter and limit values control which warehouse tasks, and how many warehouse tasks, SAP EWM groups into a warehouse order.

When SAP EWM applies a warehouse order creation rule, it sorts the warehouse tasks according to the sort rule. Individual warehouse order creation rules can contain their own sort rules.

In addition to the sort rules and the filter and limit values, warehouse order creation rules can also contain parameters for packing and consolidation groups. A consolidation group determines the warehouse tasks that are permitted to be packed together.

How to Simulate and Release a Wave

Pick Handling Units

In SAP S/4HANA, it's possible to generate pick Handling Units (pick-HUs) into which materials are packed during picking. A pick-HU is assigned to a warehouse order. You can then use the pick-HU for shipping or repack the material at a work center. You can either further pack the HU into another packaging material (and thus creating a nested Handling Unit structure), or you can move the material from one HU into another HU.

A user can create a pick-HU manually using the dialog screen on the mobile device that the user uses: The user chooses the packaging material and creates the HU. With the correct set-up of the system, pick-HUs can also be created fully automatically during the creation of the warehouse order. That is of course something that then only happens in the system: The physical packing activities must still be executed by a user, but this user can simply trigger the printing of the needed labels with a push of a button on their mobile device based on the automatically generated packing structure.

How to Check the Pick-HU


During the everyday operation of a warehouse, things can go wrong. An example: a picker cannot find all of the materials they need to pick in a specific bin. Or: When putting away a pallet, the material quantity on the pallet is smaller than the quantity that should be on the pallet, or the destination bin is not empty, which is how it's supposed to be.

Whenever an exceptional situation arises in the warehouse, an exception code is needed to describe in the system what the reason or cause for the exception is.

Depending on the activity in the warehouse (does the exception happen during putaway, picking, or physical inventory) and the work environment (do you enter the exception in a mobile device or in the desktop transaction), different follow-up actions can be triggered. The system can for example try to find an alternative bin. But sometimes the only practical option is to trigger a workflow, so that someone is informed about the situation and tries to solve the issue.

How to Work with RF for a Pick HU with an Exception

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