Audit workpaper redaction is the removal of client personal data from engagement documentation retained under ISA (UK) 230. That standard, issued by the FRC, governs how an auditor assembles and keeps the file. anonym.plus marks each identifier locally, so the evidence trail stays whole while the personal fields go.
When this applies
A working paper cites sampled employees, signatories, and account holders by name. You clear those details before the binder reaches a reviewer or an FRC inspector.
How anonym.plus handles it
- Open the engagement file in anonym.plus on your device.
- Built-in OCR reads scanned tick-marks and confirmations.
- The app marks names, references, and account numbers.
- Keep tick-mark legends and cross-references intact.
- Replace or black out the confirmed identifiers.
- Save the clean binder locally with no network call.
What you need to provide
- The working paper or binder (PDF, XLSX, DOCX, scan).
- An operator: Replace, Redact, or Mask.
- Optional batch for a binder of many schedules.
PII & financial identifiers detected
| Category | anonym.plus entity type | Example |
|---|---|---|
| Names | PERSON | sampled staff R. Ode → [EMPLOYEE] |
| Identifiers | UK_NINO | QQ 12 34 56 C → [NINO] |
| Financial | UK_BANK_NUMBER | supplier acct 0091 → [ACCOUNT] |
| Contact | EMAIL_ADDRESS | r.ode@example.co.uk → [EMAIL] |
| Org | ORGANIZATION | Acme Foods Ltd → [CLIENT] |
| Dates | DATE_TIME | date of birth 1980 → [DOB] |
Compliance achieved
- Aligns with the documentation duty in ISA (UK) 230.
- Keeps tick-marks and cross-references whole for the reviewer.
- Offline work keeps the engagement file inside your practice.
- AES-256-GCM guards the working copies at rest.
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Limitations & cautions
ISA (UK) 230 requires the file to support the conclusions reached. Remove personal data, not the evidence behind a sign-off. The app marks identifiers; you keep what the standard demands.
Frequently asked questions
Will my cross-references survive the pass?
Yes. Use the allow-list to protect tick-mark codes and index numbers. Only personal identifiers are marked for removal.
Can I clean a whole binder at once?
Yes. Batch mode handles up to 20 files per local run, with OCR for any scanned schedule.
Is the engagement file sent anywhere?
No. The desktop app works on your machine with no cloud step, so the binder stays confidential.