Definition · Plain-language
Nonconformity
A nonconformity is a non-fulfilment of a requirement, recorded as a finding in audits and resolved through corrective action.
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What counts as a nonconformity
A nonconformity arises whenever a requirement is not met. The requirement might come from an ISO standard, applicable law, a customer contract, or the organisation’s own documented procedures. Examples include a calibration overdue on a critical instrument, a procedure not followed, records missing, or a product failing a specification. In auditing, a nonconformity is recorded as a finding with objective evidence — the requirement, the evidence of non-fulfilment, and the location. This evidence-based approach distinguishes a genuine nonconformity from a mere observation or opportunity for improvement, which note potential issues without a breached requirement.
Major and minor nonconformities
Nonconformities are commonly graded by severity. A major nonconformity is a significant failure — for example the absence of a required process, a systemic breakdown, or a failure that directly threatens the integrity of the management system or its outputs. A minor nonconformity is an isolated lapse that does not undermine the system as a whole, such as a single missed record. The distinction matters because majors typically must be resolved before certification can be granted or maintained, whereas minors may be addressed through an agreed corrective-action plan over time.
Correction and corrective action
Resolving a nonconformity involves two distinct steps that standards are careful to separate. Correction is the immediate action to fix the specific problem — for instance recalibrating the overdue instrument. Corrective action goes further: it investigates and removes the root cause so the problem does not recur, for example by fixing the scheduling system that allowed the calibration to lapse. ISO 9001 and related standards require organisations to evaluate the need for corrective action, implement it, and verify its effectiveness, which is how nonconformities feed the cycle of continual improvement.
Key facts
At a glance
- Definition: a non-fulfilment of a requirement
- Context: the standard term for an audit finding in ISO management systems
- Grades: major (significant or systemic) and minor (isolated lapse)
- Correction: immediate fix of the specific problem
- Corrective action: removing the root cause to prevent recurrence
- Contrast: an observation flags a risk without a breached requirement
Common misconceptions
What people often get wrong
Often heard: A nonconformity and a corrective action are the same thing.
Actually: A nonconformity is the problem — a requirement not met. Corrective action is the response that removes its root cause to prevent recurrence. The immediate fix is correction; corrective action addresses why it happened.
Often heard: Any nonconformity means certification is lost.
Actually: Not necessarily. Minor nonconformities are usually managed through an agreed corrective-action plan without losing certification. Major nonconformities are more serious and typically must be resolved before certification is granted or maintained.
Often heard: An observation in an audit is a type of nonconformity.
Actually: An observation, or opportunity for improvement, flags a potential issue without a specific requirement being breached. A nonconformity requires objective evidence that a requirement is not met. The two are recorded differently.
Going deeper
