What does Audit Trail mean?
An audit trail is the chronological, tamper-evident record of changes to data, documents and approvals.
In product passport work, it is not a decorative history log. It shows which person or system changed a value, which source supported the change and from when the change became valid. For regulated product data, the audit trail keeps current passports connected to historical evidence.
Why does it matter for DPP and compliance?
ESPR requires DPP data to be accurate, complete, up to date and reliable. An audit trail supports those requirements because authorities, customers and approval teams can understand why a material value, certificate number or carbon figure changed.
What should teams prepare?
Teams should not add audit trails at the end of the project. Every DPP-relevant change needs a timestamp, owner, source system, previous value, new value and approval status. This matters most for supplier evidence, battery passport data and CSRD-relevant product metrics.
Related Nulara Pages
Sources