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GAO 2025 Green Book — Principle 10: control timing and segregation of duties

Selected GAO Green Book paragraphs explain preventive and detective control timing and the separation of authority, custody and recording roles.

Original conceptual transfer to fictional HKD case only; no Hong Kong legal or audit applicability claim.

What you can learn and practise

Each summary applies to the named source unit. Practice and feedback listed as confirmed are provided at source.

Payment controls: timing, incompatible duties and evidence requests

Accounting & audit · L2 · en

Suitable for
Readers who meet the stated knowledge prerequisites and want to explain the selected concepts.
Learning goals
  • Classify proposed controls by the timing of the unintended payment event.
  • Identify incompatible authority/custody/recording roles in four self-written fictional payment records.
  • Specify population, time period, evidence request and residual risk for each flagged row.
Knowledge prerequisites
Distinguish transaction records from evidence that a control was performed.
Pathline suggested preparation
Read the selected report paragraphs before creating your own original fictional payment-control example.
Duration
50 minutes (Pathline estimate)
Source practice

Source exercises: Not applicable

Source feedback: Not applicable

Executable practice: Not applicable

Source answers
Not applicable

This status applies only to this unit; check its limitations for task coverage. Feedback is listed separately.

Access for this unit
Public and free. Selected source text was readable without registration in this observation; other services and region availability were not evaluated.
Environment
Platform requirements not confirmed. Read in a browser or PDF viewer; original examples can be explored with paper, a calculator or a locally available tool. No internal files, supplied code or hosted runtime is offered.

Next action: Read Principle 10, printed pages 70–73 (PDF viewer pages 77–80), especially sections 10.10–10.13 and 10.21–10.23; then sketch your own fictional payment-control matrix.

Open this source unit ↗

Pathline practice suggestions

These are suggested actions; they do not imply a source exercise, automatic feedback or completion record.

  • Pathline reading idea: create four invented supplier-payment records and specify the requester, approver, payment releaser, recorder, payment date and available approval evidence. Identify incompatible duties and questions the records cannot answer.
  • Pathline reading idea: write a risk/control/evidence matrix naming the owner, preventive or detective timing, population and period, evidence request and residual risk. Explain why a clean role check does not prove a control operated effectively.

Limitations to check

  • The 2025 Revision, GAO-25-107721, is a U.S. federal internal-control framework applying from federal fiscal year 2026. This guide does not establish Hong Kong law, HKSA/ISA compliance, audit assurance, materiality or sampling adequacy.
  • An absent approval record is not proof approval never occurred. Calendar dates alone cannot order approval and release within the same day; request actual timestamps and evidence before judging performance.
  • Fictional role checks do not detect collusion, override, forged evidence or unrecorded transactions. Source paragraphs do not provide exercises, answers, feedback or executable practice.
  • Goals, prerequisites, preparation, task level and original practice ideas are Pathline research analysis, not automatically source-declared requirements. The duration is an unmeasured researcher estimate.
  • Original examples are self-check ideas, not provider grading or evidence of learner mastery. Human professional review, student outcomes and wider environment tests have not been performed.
Learning source and review reference

Source version: 2025 Revision, GAO-25-107721 · Unit ER-20261013-02-WP03-0001-GAO25-107721-P10-UNIT-01, version 1 · Review ER-MINIMUM-A0-WP03-final-ER-20261013-02-WP03-0001-V1-001

Recommended next action

Read Principle 10, printed pages 70–73 (PDF viewer pages 77–80), especially sections 10.10–10.13 and 10.21–10.23; then sketch your own fictional payment-control matrix.

Access and scope

The exact selected source text was guest-readable in the recorded observation. Linked assets, assessments, accounts and services are separate unverified scopes; Pathline supplies original reading guidance only.

What to check at source

The 2025 Revision, GAO-25-107721, is a U.S. federal internal-control framework applying from federal fiscal year 2026. This guide does not establish Hong Kong law, HKSA/ISA compliance, audit assurance, materiality or sampling adequacy.

Sources and review record

https://www.gao.gov/assets/gao-25-107721.pdf
Last body review
Last source observation
· Readable document; HTTP code not reported
Review reference
ER-20261013-02-A11-WP03-0001-V1-001

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