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ISO Glossary

Objective evidence

Data supporting the existence or truth of something — records, statements of fact, measurements. What an auditor must have before raising a finding, and what you need to defend one.

Objective evidence is information that can be verified: records, measurements, observations, statements of fact.

It is the currency of auditing. An auditor cannot raise a nonconformity because something feels wrong, and you cannot close one by asserting that it has been fixed. Both directions require evidence.

What counts

  • Documents and records — signed, dated, traceable to a person or system
  • Direct observation of an activity taking place
  • Measurement results from calibrated equipment
  • Statements from people, though these are weaker and usually need corroboration

What does not

  • “We always do it that way” with nothing recorded
  • A procedure describing what should happen, with no evidence it did
  • A record that cannot be traced to who produced it or when

That last point catches more organisations than any other. An inspection record with an illegible initial and no way to identify the person is not evidence of who authorised the release — and release authorisation is a specific requirement in ISO 9001 clause 8.6.

The practical implication

The most common gap in a system that genuinely works well is not that people do the wrong thing. It is that they do the right thing and leave no trace. Building evidence into the workflow — a field on a form, a step in the system, a signature at the point of decision — is usually less work than reconstructing it before an audit.

Where this applies

All glossary terms