Icologiq Knowledge · Technology/Compliance
Audit Trail
A traceable record of relevant system activities and changes showing what happened, when it happened and, where applicable, who performed the action.
Also known as:
system audit trail, change history, activity log
At a glance
Type
Technology/Compliance
Topic
Document Control
Applies to
Cross-industry
Current version
Status
Last reviewed
September 14, 2026
Definition
An audit trail records relevant system events so that activities and changes can be reconstructed and reviewed. Depending on the use case, this can include document changes, approvals, status changes, user actions or other controlled events. The exact requirements vary by regulatory context.
Why it matters
Audit trails matter because organizations may need to reconstruct the history of a record or action, including who changed what and when. Reliable audit trails support accountability, investigations, traceability and evidence that important activities can be reviewed after the fact.
Attribute material actions to authenticated users or system processes so accountability can be established.
Who performed the action
•
Record the action, affected record and relevant before/after state where change history matters.
What changed or happened
•
Use reliable date and time information so the sequence of events can be reconstructed.
When it occurred
•
Capture reasons, comments, approval state or related workflow context when the action cannot be understood from the technical change alone.
Why or workflow context where relevant
•
Prevent ordinary users from altering or deleting Audit Trail information that is relied on as evidence.
Protect the history
•
Provide practical search, filtering and reporting so authorized reviewers can use the history during audits, investigations and security review.
Make the trail reviewable
•
Technology/Compliance explained
What a useful Audit Trail preserves
An Audit Trail records significant actions and changes so the history of a controlled record or system activity can be reconstructed. Its usefulness depends on reliable timestamps, user attribution, protected history and enough context to understand what changed.
The ability to follow the history, status, location or relationships of information, materials, products, actions or decisions through a process.
Traceability
Concept
· Quality/Compliance
The process of ensuring that approved documents are current, traceable, accessible to the right people and protected against uncontrolled change or use.
Document Control
Process
· Document Control
An electronic signing action used to record a person's approval, review or other sign-off on an electronic record.
Electronic Signature
Technology
· Document Control
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