Field notes
Mapping ERP events to financial assertions
Auditors speak in assertions. ERP specialists speak in events. Audit trail readiness sits in the gap: every critical log type should point to a claim you are willing to defend about the financial statements.
Start with three columns
Build a simple table: event family, assertion, owner. Event families might include journal postings, period locks, vendor bank changes, and role grants. Assertions usually land on completeness, accuracy, cutoff, or rights and obligations depending on the story.
Owners must be humans with calendar time, not a shared mailbox. When an upgrade resets a log, that owner schedules the re-test.
Journal events
Journal trails support completeness and accuracy when they show actor, timestamp, document number, and whether a reversal or parking document intervened. If your tenant collapses parking and posting into one opaque ID, document that limitation beside the assertion — do not invent clarity the system refuses to provide.
Access events
Privileged access changes rarely post a won amount, yet they explain why a posting was possible. Map them to the control narrative that sits under accuracy and authorization claims. Capture before/after role contents, not only the ticket number.
Master-data events
Supplier bank edits belong next to rights and payment completeness. Pair the change log with the approval evidence your workflow actually stores. If approvals live in chat, say so; mapping cannot repair a missing system of record.
Keep the map short
Teams that list forty event types abandon the map by week three. Prefer twelve high-risk families and deepen those. Our flagship course walks through an assertion map worksheet you can adapt — see Cloud ERP Audit Trail Readiness.