2-Step Picking (SAP Library - Warehouse Management Guide)

2-Step Picking

Use

For 2-step picking, the picking process is divided into 2 separate steps. In the first step, you pick the entire quantity of materials need to fill requests (several deliveries or transfer requirements). During the second step, you divide up the materials and allocate them to match the corresponding requirements.

Two-step picking can be used to pick materials for both deliveries and transfer requirements.

Two-step picking includes three different processes:

Removal

During the removal process, the cumulative quantity of each material required in reference documents (deliveries or transfer requirements) is picked from bulk or random storage and moved to an intermediate storage area.

Allocation

During the allocation process, the cumulative quantities of materials are divided up to match the individual requirements in the reference documents and distributed to the appropriate goods issue area.

Direct picking

Direct picking takes place when two-step picking is material-dependent (defined in the material master). In other words, part of the material is picked using the 2-step method and part of the material is picked directly from the warehouse.

Prerequisites

Before using the 2-step picking function, you must activate it and define control parameters in the Customizing application.

To activate 2-step picking for deliveries, see the Warehouse Management IMG documentation under Interfaces ® Shipping ® 2-step picking.

To activate 2-step picking for transfer requirements, you define control data under Activities ® Transfers ® Set up 2-step picking for transfer requirements.

Features

You can activate 2-step picking separately for deliveries and for transfer requirements. You can activate 2-step picking for each material separately. For this "material-dependent" picking, you define in the material master record whether the picking is to take place directly from the warehouse or using the 2-step process.

The relevance for 2-step picking is determined when the system generates the reference documents (deliveries or transfer requirements). The system marks the relevant items in the reference documents accordingly.

Two-step picking was developed using the group as a basis. The group number serves as a means to combine several reference documents that are to be processed in a single picking process. The system accumulates quantities of each material to be removed using the group number. You can also use the group number to allocate materials to the individual requests for multiple processing. Additionally, you can carry out other functions associated with the group, such as printing and confirmation.

After the reference documents have been assigned to a group, you can influence the relevance at the level of the material and at the level of the reference document. Additionally, customers can redefine their own 2-step picking characteristics via customer exit MWM2S001.

For 2-step picking, the following functions have been developed:

After you have created the group, you can display the 2-step relevance of materials in the group. You can influence the 2-step relevance of each of the materials in a group manually using a maintenance function (Transfer order ® 2-step picking ® Redefine). You can activate the customer exit (MWM2S001) from within this function.
The system generates transfer orders using a group number to remove the accumulated quantities of material.
Using an evaluation function, you can analyze groups that are relevant for 2-step picking.

Two-step picking is imbedded in the following functions:

You can change or redetermine the relevance of materials for 2-step picking manually when you create the group.
When you print or confirm the group, you can select the individual steps of 2-step picking.