Bin & Location Management

Definition

Bin & Location Management is the systematic control of the physical locations in which materials are stored within a Stores or warehouse environment. It establishes a controlled relationship between the material identity, storage area, rack, shelf, bin and ERP location.

A bin is a defined physical storage position or compartment used to hold one or more inventory items. A location is the broader physical or logical identifier used to establish where stock is held within the organization.

A professional location system ensures that a material can be located quickly from its system record and that the physical location can be verified against the inventory record.

Objectives

• Provide a unique and understandable identity for every storage location.
• Reduce material search and retrieval time.
• Improve stock visibility and physical accessibility.
• Maintain accurate ERP and physical location records.
• Improve put-away and picking discipline.
• Use available storage space efficiently.
• Prevent misplaced and unidentified inventory.
• Support FIFO and FEFO where applicable.
• Support cycle counting and physical verification.
• Improve material traceability.
• Reduce unnecessary handling and internal movement.
• Improve safety and housekeeping.
• Support warehouse and Stores performance measurement.

Scope

Bin and location management applies to central stores, sub-stores, maintenance stores, production stores, project stores, line-side locations, quarantine areas, rejected-material areas, return areas, scrap yards and other controlled inventory locations.

It may cover raw materials, consumables, MRO spares, mechanical, electrical and instrumentation items, lubricants, chemicals, packing materials, safety items, tools, critical spares and other industrial inventory.

Location Hierarchy

A professional Stores layout should use a logical hierarchy rather than treating every physical position as an isolated number.

Example Location Code

The exact coding structure should be adapted to the physical layout and ERP capability. The important principle is that every active location has a unique identifier and the coding logic is applied consistently.

Storage Location Types

Fixed vs Dynamic Location Systems

Dedicated vs Shared Bins

The decision to use dedicated or shared locations should depend on the material characteristics, identification requirements, packaging, movement, contamination risk and system capability.

Location Assignment Principles

Location assignment should not be based only on whichever empty space is available. Material characteristics and operational requirements should be considered.

• Material size and weight.
• Movement frequency.
• ABC classification.
• FSN classification.
• Criticality.
• Hazard and safety requirements.
• Temperature and environmental sensitivity.
• Moisture and corrosion sensitivity.
• Security requirements.
• Batch or lot traceability.
• Expiry or shelf-life requirements.
• Frequency of issue.
• Proximity to point of use.
• Handling equipment requirements.
• Storage capacity and load limits.

Fast-Moving Material Location Strategy

Fast-moving items should generally be positioned so that their handling and retrieval require minimum unnecessary movement, while maintaining safety and suitable preservation conditions.

FSN analysis can therefore be combined with location planning. Frequently issued items may receive preferred locations close to the issue counter or point of use, while non-moving items may be positioned in less accessible areas where appropriate.

ABC and Location Planning

ABC classification can be considered when deciding how storage space and accessibility should be organized.

ABC classification should not be treated as the only location criterion. A low-value critical spare may require much stronger control than its annual consumption value alone would suggest.

VED and Location Control

Criticality can materially affect location decisions. A VED analysis can identify Vital, Essential and Desirable items and help determine their accessibility, protection, identification and emergency availability requirements.

Bin Labeling

Every active bin should have a durable and readable identification label. The label should provide enough information to allow the operator to identify the location and, where policy requires, the material stored there.

Put-away and Location Assignment Process

1. Complete receipt and document verification.
2. Establish inspection and quality status.
3. Identify the material correctly.
4. Determine the approved storage zone.
5. Select the appropriate location according to the location rules.
6. Verify location capacity and safety restrictions.
7. Physically move the material.
8. Confirm the material identity and location.
9. Update ERP or location records.
10. Complete physical and system reconciliation.

Picking / Issue from Bin

1. Receive an authorized material issue requirement.
2. Identify the correct item code and quantity.
3. Identify the approved storage location.
4. Apply FIFO or FEFO where applicable.
5. Physically pick the material.
6. Verify item, quantity and status.
7. Complete the authorized issue transaction.
8. Update the location balance.
9. Reconcile physical and system quantity.

FIFO and FEFO Location Control

Location planning should support the required inventory rotation method. For ordinary stock, FIFO may be appropriate where age affects usability or policy requires it. For materials with expiry dates, FEFO (First-Expired, First-Out) may be more appropriate.

Two-Bin System and Location Management

The Two-Bin System uses two controlled quantities or containers for the same material. When the first bin is consumed, it signals replenishment while the second bin continues to support consumption.

The method is particularly useful for relatively stable, frequently consumed consumables where visual replenishment is practical.

Three-Bin System

A Three-Bin System can separate stock into working, reserve and replenishment or incoming-stock stages.

The exact operating rule should be defined by the organization. The important principle is that each physical container or position has a clear purpose and replenishment signal.

Location Capacity Control

A storage location should have a defined capacity based on physical dimensions, load limits, packaging and safe handling requirements.

Space Utilization

Storage space should be measured rather than judged only visually. Capacity utilization should consider both physical occupancy and usable operating space.

Extremely low utilization may indicate inefficient layout, while excessively high utilization can reduce accessibility, increase handling risk and make cycle counting difficult.

Location Accuracy

Location accuracy measures whether the material physically exists at the location recorded in the system or location register.

A location can be physically occupied yet still be inaccurate if the system records a different item, quantity, batch or status.

Cycle Counting by Location

Cycle counting can be organized by item, location, classification or a combination of these methods.

• High-value locations may receive more frequent verification.
• Critical spare locations may receive higher control frequency.
• Fast-moving bins may require frequent checks.
• Locations with previous discrepancies should receive increased attention.
• Quarantine and rejected locations should be separately controlled.
• Random verification can identify weaknesses not detected by scheduled counts.

Location Audit Checklist

ERP Location Management

ERP location management should maintain a controlled relationship between item, quantity, storage location and inventory status. Depending on the ERP configuration, locations may represent stores, storage bins, warehouses, batches, stock types or other inventory dimensions.

Location Change Control

A material should not be physically relocated without updating the corresponding controlled record where location tracking is part of the inventory system.

For permanent layout changes, the master location structure should be updated through controlled change management rather than informal renaming of racks or bins.

Location Status Control

Common Location Management Problems

• Material placed in an empty location without recording it.
• Multiple items stored without adequate identification.
• System location differs from physical location.
• Bin labels are missing, damaged or ambiguous.
• Same material is scattered across uncontrolled locations.
• Quarantine material is mixed with usable stock.
• Rejected material is not physically segregated.
• Fast-moving materials are located far from the issue point.
• Heavy material is stored in unsuitable positions.
• Location capacity is exceeded.
• Inactive locations remain in the ERP.
• Temporary locations become permanent without governance.

Decision Rules

• Every active location should have a unique identity.
• Every stored material should have a traceable location.
• Location records should be updated immediately after controlled movement.
• Material status should be physically and systemically distinguishable.
• Location selection should consider movement, criticality, size and risk.
• Do not use uncontrolled temporary locations for routine inventory.
• Do not mix incompatible or status-different materials.
• Review location utilization periodically.
• Review inactive and obsolete locations periodically.
• Investigate repeated location discrepancies at root cause.

Key KPIs

Excel / MIS Application

A practical bin-location master can contain the following fields:

A location audit sheet can additionally contain physical quantity, system quantity, variance, variance value, reason, corrective action, responsible person and closure date.

Professional Location-Control Matrix

Industrial Application

In an industrial MRO Stores environment, thousands of items may be distributed across mechanical, electrical, instrumentation, lubrication, chemical, safety and general stores. Without disciplined location management, the physical inventory may exist but remain difficult to find, verify or issue efficiently.

A controlled location structure connects material codification with physical storage. The item master identifies what the material is; the location master identifies where it is; the inventory transaction records identify how much is available and the movement history explains how it got there.

Related Areas

Stores Management · Material Identification & Codification · Storage & Preservation · Put-away & Material Preservation · Inventory Management · ERP & MIS