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EWM/SCWM/SLOT/SCWM/REARintermediate

EWM Slotting, Rearrangement and Ad Hoc Movements

The warehouse optimises itself: slotting analyses demand and decides that a fast-moving product belongs in a front pick face; rearrangement creates the tasks to move it there; and an ad hoc movement lets a worker move stock on the spot when needed.

Educational content. SAP behaviour varies by configuration and release. Spotted something off? Report it.

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SAP DOCUMENTSVisualization of EWM Slotting, Rearrangement and Ad Hoc Movements. All information shown in the scene is also available in the caption and the panels next to it.
Demo data

01Run slotting

Slotting analyses FG-2000: high demand, small units. Proposal: pick face PICK-02-05.

FG-2000

/SCWM/SLOT — Slotting result

Proposed bin
PICK-02-05
Basis
Demand, order lines, product dimensions (demo)

Business scenario

FG-2000 has become a fast mover but sits in high-rack bin RACK-01-03, far from the packing area. Slotting proposes pick face PICK-02-05.

All companies, numbers and documents are fictional demo data.

Step-by-step flow

  1. 01

    Run slotting open in twin

    Slotting analyses FG-2000: high demand, small units. Proposal: pick face PICK-02-05.

    Fast movers near the pick path; slow movers in high racks.

  2. 02

    Apply the slotting result open in twin

    The new parameters are activated. What happens to the 40 EA already in the high rack?

    Rearrangement compares actual and optimal bins and creates tasks for the difference.

  3. 03

    Old stock stays in the wrong place open in twin

    New receipts go to the pick face, but pickers keep walking to the high rack for the existing 40 EA until they are used up.

    The benefit only appears once stock is rearranged.

  4. 04

    Rearrangement task open in twin

    40 EA move from RACK-01-03 to PICK-02-05.

    Bin-to-bin within AFS: no inventory-management posting.

  5. 05

    Ad hoc movement open in twin

    A worker notices space in the rack and moves 10 EA from bulk with an ad hoc task.

    Useful for exceptions; authorisations usually restrict it.

  6. 06

    Better slotted open in twin

    Slotting set the rules; rearrangement and an ad hoc task moved the stock. No postings in inventory management.

    They change travel time and space use, not stock value.

SAP documents

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Stock impact

StepPlant / SLocStock typeMvTChange
Rearrangement task1000 / AFS · RACK-01-03Unrestricted use—−40 EA
Rearrangement task1000 / AFS · PICK-02-05Unrestricted use—+40 EA
Ad hoc movement1000 / AFS · BULK-01-01Unrestricted use—−10 EA
Ad hoc movement1000 / AFS · RACK-01-03Unrestricted use—+10 EA

Accounting impact

No accounting impact in the steps shown.

Typical conceptual flow. Actual G/L accounts and posting behaviour depend on material valuation, automatic account determination and system configuration.

Movement type

This flow spans several documents rather than a single movement type.

Keeps the warehouse layout matched to demand, moving stock to better locations through planned rearrangement or quick ad hoc moves.

Transactions & Fiori apps

  • /SCWM/SLOT — Slotting
  • /SCWM/REAR — Rearrangement
  • /SCWM/ADPROD — Ad Hoc Movement — Product
  • /SCWM/MON — Warehouse Monitor
  • Warehouse Monitor

Differences by SAP version

Classic WM had no slotting; rearrangement was manual.

Configuration

  • Slotting condition records

    Configuration dependent

    Map product properties to putaway parameters.

  • Rearrangement strategy

    Configuration dependent

    Which differences between actual and optimal bins create tasks.

Prerequisites

  • Product demand data and dimensions for slotting
  • Condition records for slotting rules
  • Warehouse process type for ad hoc moves

Master data

Product (EWM views)
Putaway control indicator, storage section and bin type indicators updated by slotting.

Organizational structure

  • Warehouse EW01

Tables

TableDescription
/SCWM/AQUAQuants before and after
/SCWM/ORDIM_CRearrangement and ad hoc tasks

Integration

    Common errors

    • “Rearrangement finds nothing to move”

      Likely causes: Slotting results not activated; Stock already in an optimal bin

      Where to look: Product warehouse data · Slotting log

    Troubleshooting

    Something went wrong? Work through these checks in order. They are diagnostic questions, not configuration instructions — confirm changes with your system owner.

    1. CHECK 1

      Slotting

      • Demand data available?
      • Results activated?

    Interview questions

    • Slotting vs rearrangement?

      Slotting determines where a product should be stored (putaway parameters, optionally fixed bins and min/max) based on demand and dimensions. Rearrangement compares actual stock locations with those optimal ones and creates warehouse tasks to move existing stock.

    Quiz

    Q1 · Multiple choice

    Which process moves existing stock to the bins slotting recommends?

    References

    • SAP SE — SAP Help Portal: Slotting (source)
    • SAP SE — SAP Help Portal: Rearrangement (source)
    • SAP SE — SAP Help Portal: Ad Hoc Movements (source)

    Explanations are original. They summarize standard behaviour; always validate against your system's release and configuration.

    Version history

    VersionChange
    1.0.0Initial version.