# Validation 101: Critical Data vs Critical Functions, the Simplest Scoping Tool

> Validation teams waste effort when everything feels equally important. The fastest way to focus is to define critical data and critical

- Author: Tomaž Berden (https://lifescienceai.org/authors/tomaz-berden/)
- Published: 2026-07-26
- Category: Fundamentals
- Canonical URL: https://lifescienceai.org/articles/validation-101-critical-data-vs-critical-functions/
- Word count: 215
- Platforms named: Qualitum (https://qualitum.ai/)

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## Scope gets easier when you name what is critical

Validation teams waste effort when everything feels equally important. The fastest way to focus is to define critical data and critical functions.

Data is critical if errors could affect product quality, patient safety, or data integrity. Examples include lab results, batch records, approvals, timestamps, deviations, CAPA status, and training completion.

Functions are critical if they create, modify, approve, or report critical data. Especially when they trigger a quality decision.

## How to use this in testing

Test critical workflows end-to-end. Verify access control for critical roles. Confirm audit trails capture critical changes. Add negative tests for high-impact failure modes.

This method helps new teams build defensible validation packs without bloated documentation.

## How this looks with an agentic layer

The fundamentals above do not change when validation is automated - they get enforced earlier. On a layer like Qualitum, intended use, risk and evidence are structured inputs rather than documents someone remembers to write: agents draft against them, maintain the traceability, and hand the result to a named human for approval.

- Intended use and critical data are captured once and reused across the lifecycle
- Evidence is generated with its traceability attached, not reconstructed for the audit
- The approval - and the accountability - stays with your named reviewer

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Source: LifeScienceAI - https://lifescienceai.org/articles/validation-101-critical-data-vs-critical-functions/. Editorial analysis, not regulatory advice. Cite as: Tomaž Berden, "Validation 101: Critical Data vs Critical Functions, the Simplest Scoping Tool", LifeScienceAI, July 26, 2026.