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Why Is Our Inventory Accuracy Bad and How Do We Fix It?

Inventory accuracy is a transaction discipline problem, not a counting problem. Where accuracy breaks, how to diagnose it, and the controls that hold it.

Direct answer: Bad inventory accuracy is almost never a counting problem. It is a transaction discipline problem. Inventory goes wrong at receiving, putaway, picking, and returns, and counting only measures the damage after the fact. The fix is to find where transactions break, close those gaps with written standard work and ownership, then use cycle counting to verify rather than to repair.

Where accuracy actually breaks

BreakpointWhat goes wrongWhy it persists
ReceivingQuantity accepted without verification, wrong item or UOMPressure to clear the dock
PutawayProduct stored in an unrecorded locationNo location discipline or confirmation step
PickingShort pick substituted without a transactionOperator solves the order, not the record
Returns and RMAProduct back on the floor before it is received inNo quarantine control
Customer or vendor owned stockNot segregated, counted as sellableOwnership rules never written down
AdjustmentsVariances written off without root causeCounting treated as the fix

The last row is the one that keeps operations stuck. If every count ends in an adjustment and no one asks why, the count has become a maintenance ritual rather than a control.

Diagnose before you count

Run this before changing the cycle count program.

  • Pull ninety days of adjustments and rank by item, location, and transaction type
  • Identify which function the variance traces to, not just which SKU
  • Check whether adjustments cluster by shift, by operator, or by process step
  • Verify item master accuracy: dimensions, UOM, conversion factors
  • Confirm whether customer owned and vendor owned inventory is physically and systemically segregated

Variance that clusters is a process defect. Variance that is evenly scattered is usually master data.

The control set that holds accuracy

  • Written standard work for receive, putaway, pick, pack, ship, and return, with one named owner per process
  • A confirmation step at every inventory movement. No movement without a transaction
  • Location discipline with no unrecorded storage, including staging and overflow
  • Quarantine control for returns, damage, and RMA so nothing reenters sellable stock uninspected
  • Segregation and labeling rules for customer owned and vendor owned inventory
  • Cycle count compliance tracked as a measure, with a named escalation path when counts are missed
  • Root cause required on every adjustment above a defined threshold

What to measure

MeasureTarget behavior
Inventory record accuracy by locationTrend up and hold
Cycle count complianceCounts completed on schedule, not caught up in batches
Adjustment value and frequencyTrend down with documented root cause
Receiving accuracyVerified at the dock, not discovered later
Variance by transaction typeShows which process still leaks

Accuracy percentage alone is a vanity measure. Pair it with adjustment root cause or the number tells you nothing actionable.

What bad accuracy costs

Inaccurate inventory drives expedited freight, short shipments, lost sales, excess safety stock, and labor spent searching. It corrupts demand planning and makes every downstream decision less reliable. In acquired or consolidated operations it also distorts the working capital picture a sponsor underwrote.

How Pursuing Excellence approaches this

Warren Stout has led inventory accuracy and governance recovery across distribution operations, including customer owned and vendor owned inventory control, cycle count compliance, and RMA and quarantine process design. The approach fixes the transaction discipline first and uses counting to verify the fix, which is the sequence that makes the gain permanent.

Read the case study on post consolidation service recovery and inventory governance. Scope questions are answered on the FAQ.

A useful starting point

How healthy is your
operating system?

The Operations Health Check is the no cost starting point for a conversation about operating priorities.