Configuring Putaway Strategies and Warehouse Process Types for Inbound Flow

Explanation

Once the basic inbound flow is understood, the next skill is configuring the system so putaway decisions happen automatically and correctly for different material and storage scenarios. This is where a consultant moves from describing the process to shaping it. In classic ECC WM, putaway is governed by the storage type search configuration, which is a sequence of storage types checked for a given combination of warehouse number, movement type, and storage type indicator (often derived from material master WM views or storage section). Each storage type in the search sequence has an assigned putaway strategy, such as Fixed Bin, Open Storage, Next Empty Bin, or Addition to Existing Stock. The material master's warehouse view carries indicators (like the storage type indicator and section indicator) that influence which search sequence entries apply. When a transfer requirement or transfer order is created for putaway, WM evaluates the search sequence, tries each storage type in order, and stops at the first one where a valid bin can be determined; if no storage type in the sequence can accommodate the stock, the process fails and requires manual intervention. In EWM (Embedded or Decentralized), the equivalent capability is built around Storage Type Search combined with Putaway Control Indicators and Warehouse Process Types (WPTs). A warehouse process type is assigned to a delivery item (via process type determination) and drives which movement rules, task creation logic, and print/confirmation behavior apply. EWM's storage type search also considers storage sections and bin sorting, and it is common to combine this with Slotting and Rearrangement functionality for more dynamic bin assignment based on velocity or capacity, though slotting is a more advanced topic beyond simple strategy search. A key configuration decision is how granular to make storage type indicators and process types. Too few categories force all materials into one putaway logic, causing inefficient bin use (for example, small items going into pallet-only bulk storage). Too many categories create a maintenance burden and confuse warehouse staff who must recognize many process variations. A practical approach is to group materials by physical handling characteristics (each, case, pallet), storage condition (ambient, cold, hazardous), and velocity (fast, medium, slow mover) and let those combinations map to a manageable number of storage type indicators or process types. Another important configuration area is the interaction between putaway strategy and quality inspection. Materials requiring inspection are often first putaway to a quality inspection storage type or blocked stock area, with a workflow (manual or automated via inspection lot) to release stock into unrestricted storage type search once quality decisions post. Configuring this correctly avoids goods becoming pickable before they are actually released for use. Testing putaway configuration requires more than a single happy-path transaction. Consultants should test: a bin that is exactly full to see if the system correctly rejects and searches the next storage type, mixed-material HUs where different indicators might conflict, and negative scenarios such as a material with no valid storage type indicator maintained, which should raise a clear error rather than silently defaulting. Production support teams frequently trace putaway failures back to missing or inconsistent material master WM view maintenance rather than actual strategy configuration errors, so validating master data setup is often the first troubleshooting step before assuming the configuration itself is wrong.

Code example

* Example: illustrative storage type search sequence logic (ECC WM) -- not a real transaction, conceptual only* Warehouse 010, Storage Type Indicator '01' (Fast Mover - Each Pick)* Search Sequence:*   1. Storage Type 010 (Fixed Bin) -- strategy F*   2. Storage Type 020 (Bulk Storage) -- strategy B*   3. Storage Type 099 (Overflow) -- strategy L (Next Empty Bin)* Logic: system checks 010 first for an assigned fixed bin;* if none found or bin full, checks 020 for bulk capacity;* if still no valid bin, falls back to 099 with next empty bin logic.* If all three fail, transfer order creation errors out for manual placement.

Real project scenario

A pharmaceutical distributor implementing EWM found that fast-moving cold-chain items were being putaway into general ambient bulk storage because the material master had not been updated with the correct storage condition indicator during a bulk data migration. The putaway strategy configuration itself was correct, but the underlying master data gap caused incorrect bin assignment. The fix involved a mass data correction project on the material master warehouse views combined with a validation report run before each future material creation to catch missing indicators.

Common mistakes

• Assuming a putaway failure means the storage type search configuration is broken, when the actual cause is missing or incorrect material master indicators • Creating too many storage type indicators or process types, making the configuration hard to maintain and train staff on • Not testing full-bin and no-valid-bin scenarios, only ever testing the happy path with empty bins available • Failing to separate quality-inspection putaway logic from standard unrestricted putaway, causing unreleased stock to become pickable • Copying storage type search sequences from another warehouse without adjusting for local storage type layout and capacity

Best practices

• Design storage type indicators around physical handling and storage condition groupings rather than one-off exceptions • Include full-bin and no-valid-storage-type negative test cases in every putaway configuration test script • Separate quality inspection putaway logic clearly from standard putaway to prevent premature stock availability • Validate material master WM view indicators as part of any data migration or mass material creation process • Keep the search sequence documentation current and reviewed whenever new storage types are added to the warehouse

Interview angle

A common interview question asks how the system decides where to put away a pallet and what happens if the first storage type in the search sequence is full. Strong candidates explain the concept of a search sequence with fallback storage types, describe the role of material master WM indicators in driving which sequence applies, and can articulate the difference between a configuration defect and a master data defect when diagnosing a real putaway failure.