The glossary to understand and take action

Audit trail

A set of links and records making it possible to understand a transaction from its source document through to its recording and controls.

Notion comptable, fiscale ou juridique · Luxembourg Fiduciaries Editorial Team · Reviewed on

Understand the scope

Definition and points to distinguish

In an accounting file, it may link an order, invoice, payment, approval and correction. A series of files without common references is difficult to follow. The proposed method must be adapted to evidentiary requirements and applicable rules; the term alone does not designate a certification.

In your file

What this changes in practice

An audit trail makes it possible to reconstruct the path of a transaction between its economic reality, its documents, its approvals and its recording. It must remain understandable despite changes in software or personnel. The mere accumulation of files does not guarantee traceability. Consistent references, stable filing and the retention of corrections facilitate controls and understanding of the accounts.

A scenario to help you understand

Educational example

For a sale, the business links the order, delivery, invoice, entry and payment in order to explain any discrepancies.

Fictitious situation, presented to illustrate the concept.

Prepare for what comes next

Points to check

  • Relier les pièces aux écritures
  • Conserver les validations utiles
  • Tracer les corrections

The practical question

Find out more

Comment garder la traçabilité quand une écriture est corrigée ?

Conservez la référence de l’opération initiale, la raison de la correction et les pièces qui la justifient. Le lecteur doit pouvoir reconstituer le traitement sans dépendre de la mémoire d’un collaborateur. Les droits de modification et les journaux utiles doivent être organisés dans le logiciel. La correction ne doit pas rompre le lien entre document source et comptes.

Connecting concepts

Terms to know as well

Continue with the concepts, contacts and procedures related to this topic.

Accounting documentAn accounting document is a document that substantiates a transaction: an invoice, statement, contract or other evidence appropriate to its nature.General ledgerThe general ledger presents the movements recorded in each accounting account, together with their references and amounts.Reversibility of accounting dataReversibility refers to the ability to retrieve the documents and data needed to continue management with another tool or service provider.Accounting reviewAccounting review consists of all checks aimed at examining the consistency and supporting evidence of the prepared accounts.OCR — optical character recognitionOCR enables a tool to recognise characters in a scanned document in order to extract text or data from it.PeppolNetwork enabling the exchange of structured documents, including electronic invoices, between participants.

Put it into practice

Explore further with our guides

Practical guideAccounting documents: organising filing and retentionPractical guideCredit note and corrective invoice: correct without losing the audit trailPractical guideCeasing an activity: distinguishing cessation from the dissolution of the companyPractical guideVoluntary liquidation: understanding the steps and preparing the accounts

Sources and verification

References consulted on 20 September 2026. Official procedures specify the applicable conditions and exceptions.

This guide explains a general process. The applicable rules depend on your situation; it does not constitute personalised advice. Report a correction.

A definition gives you a reference point. To examine your situation, clarify your question with a professional.