Operative buyer internal KPI

Operational KPI – Deviation Management (Quality & Invoice)

KPI Focus

This KPI measures how well the operative buyer controls and resolves operational deviations that interrupt normal Procure-to-Pay and supply flows.

The KPI focuses on:

  • visibility of open deviations
  • speed and discipline in resolving them
  • maintaining flow, not analyzing root causes in depth

Why Deviation Management Is a Core Operational KPI

Deviations are unavoidable in operational purchasing:

  • deliveries can be incorrect or non-conforming
  • invoices may not match PO or goods receipt

What distinguishes a professional operative buyer is not the absence of deviations, but:

  • having control over open issues
  • resolving them within reasonable time
  • preventing backlog and operational noise

Unmanaged deviations lead to:

  • blocked invoices
  • delayed payments
  • frustrated suppliers
  • internal dissatisfaction
  • loss of trust in procurement processes

KPI Definition – Deviation Management (Level 1)

What the KPI measures

The KPI measures:

  • the number of open quality deviations (NCRs)
  • the number of open invoice deviations
  • and how long they remain unresolved

This KPI answers the question:

“Do we have control over our operational exceptions?”

Deviation Types in Scope

A. Quality Deviations (NCR)

Triggered by:

  • wrong material
  • damaged goods
  • incorrect specifications
  • missing documentation

Resulting in:

  • NCR creation
  • blocked material or delivery
  • need for resolution (return, rework, accept, scrap)

B. Invoice Deviations

Triggered by:

  • price mismatch
  • quantity mismatch
  • missing PO reference
  • incorrect tax or currency

Resulting in:

  • invoice block
  • manual investigation
  • credit note or correction

KPI Structure – Open Deviation Control

Step 1 – Deviations Identified

  • NCR created or invoice blocked
  • Deviation registered in system
  • Owner assigned

Step 2 – Deviations Open

  • Deviation not yet resolved
  • Awaiting:
    • supplier response
    • internal decision
    • correction or credit

Step 3 – Deviations Resolved

  • NCR closed with disposition
  • Invoice matched and released for payment

KPI Measurement – Two Core Views

KPI A: Number of Open Deviations

  • Total open NCRs
  • Total open invoice deviations

Used to:

  • understand workload
  • detect loss of control early

KPI B: Deviation Aging

  • Average age of open deviations (days)
  • Optional aging buckets:
    • 0–7 days
    • 8–30 days
    • 30 days

This measures resolution capability, not volume.

KPI Target (Example)

Targets should be realistic and category-dependent.

Example:

  • No open deviations without owner
  • Average resolution time:
    • NCR: ≤ 30 days
    • Invoice deviation: ≤ 14 days
  • No deviation older than:
    • 60 days without escalation

Data Source (KPI Database)

Typical sources:

  • Quality system (NCR log)
  • ERP invoice block reports
  • AP deviation lists

This KPI database acts as:

  • a deviation backlog overview
  • a prioritisation tool
  • an operational control dashboard

Desired Effect of Measuring This KPI

The organization aims to:

  • prevent accumulation of unresolved issues
  • reduce operational stress
  • improve supplier and AP collaboration
  • ensure smooth cash flow
  • maintain credibility of procurement processes

What This KPI Does Not Measure

This KPI does not measure:

  • supplier quality performance
  • root cause effectiveness
  • cost of poor quality

Those belong to:

  • supplier KPIs
  • tactical quality management
  • supplier development programs

A high number of old open deviations indicates:

  • lack of prioritisation
  • unclear ownership
  • reactive working style

A low and stable deviation backlog indicates:

  • strong daily routines
  • clear accountability
  • effective cross-functional cooperation

Future Development (Higher Maturity)

At higher maturity levels, this KPI can evolve to:

  • deviation recurrence rates
  • root cause closure rate
  • supplier-specific deviation trends

These belong to future development, not core operational control.

Summary

  • Deviations are normal — backlogs are not
  • This KPI measures:
    • control
    • discipline
    • resolution capability
  • It provides a clear picture of:
    • workload
    • operational maturity
    • process health

Use the tag KPI to find more information about procurement KPIs. Learn more about KPI generic defined by Wikipedia.

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