Domain E · Area E-CA3 · Data quality, comparability, lineage and system controls
E.8Manage comparatives, errors, restatements and methodology changes
Working Draft version 1.1
Purpose and scope
This unit covers the capability to determine and document the treatment of prior-period sustainability information when errors, definition or methodology changes, boundary changes, acquisitions or disposals, improved data, estimates or target recalculations affect comparability. It includes restatement decisions, comparative bridges, disclosure of reasons and effects, approval, cross-channel consistency and retention of prior versions.
Applied competency statement
Can determine, document and control comparatives, errors, restatements and methodology changes so that period-on-period information remains transparent, supportable and consistently communicated.
Boundary and escalation
This unit governs sustainability reporting comparatives and does not determine financial-statement accounting treatment, legal correction duties, market announcements or specialist target or scientific recalculation rules. Those matters require qualified finance, accounting, legal, methodology or subject-matter owners. G.11 addresses published correction and post-publication control.
Key quality risks
Correcting only the current period while leaving the comparative misleading; restating favourable metrics but not adverse ones; confusing an error, estimate update, methodology change and boundary change; silently replacing prior values on a website; recalculating without retained source evidence; inconsistent treatment across reports and ratings submissions; target or base-year recalculations not reconciled to published performance; and excessive restatement that creates false comparability.
E.8-K01
Understands error, correction, estimate update, proxy replacement, methodology change, definition change, boundary change, source improvement, acquisition, disposal and target or baseline recalculation.
Knowledge Type: Change classification · Normative Weight: Core
E.8-K02
Understands consistency, retrospective and prospective treatment, practical limitations, loss of comparability, pro forma or like-for-like information and the need to avoid creating artificial comparability.
Knowledge Type: Comparability principles · Normative Weight: Core
E.8-K03
Understands reporting-basis requirements, materiality of the effect, feasibility, available evidence, user needs, governance and consistency considerations in determining whether and how to restate.
Knowledge Type: Restatement criteria · Normative Weight: Core
E.8-K04
Understands prior-period reperformance, comparative bridges, effect by driver, boundary and method, reconciliation to previously published values and documentation of unavailable recalculation.
Knowledge Type: Calculation and bridge · Normative Weight: Core
E.8-K05
Understands clear explanation of nature, reason, amount or qualitative effect, periods affected, limitations and consistency across reports, websites, investor materials, ratings and data platforms.
Knowledge Type: Disclosure and channels · Normative Weight: Core
E.8-K06
Understands decision authority, legal and specialist review, approval, versioning, archived originals, effective date, correction linkage and change control.
Knowledge Type: Governance and retention · Normative Weight: Core
E.8-S01
Classify the change or error and identify affected metrics, periods, reports, targets, systems and external channels.
Skill Type: Core applied capability · Observable Output or Result: Change and comparative impact inventory
E.8-S02
Evaluate reporting-basis criteria, materiality, evidence, feasibility, user impact and consistency and recommend retrospective, prospective or explanatory treatment.
Skill Type: Restatement assessment · Observable Output or Result: Comparative and restatement assessment memorandum
E.8-S03
Reperform or coordinate prior-period calculations and produce a transparent bridge from previously published to revised information.
Skill Type: Recalculation and bridge · Observable Output or Result: Prior-period bridge and recalculation schedule
E.8-S04
Prepare the methodology-change and comparative explanation and ensure consistent updates across controlled outputs and data platforms.
Skill Type: Disclosure and channel control · Observable Output or Result: Methodology-change, approval and disclosure record
E.8-S05
Obtain methodology, finance, legal and governance approval and retain original, revised, supporting and post-publication records.
Skill Type: Approval and retention · Observable Output or Result: Comparative decision and archive trail
E.8-B01
Applies correction and restatement principles consistently to favourable and adverse changes and does not select treatment to improve trends.
Behaviour Type: Symmetry and neutrality · Non-compensable Requirement: No
E.8-B02
Clearly distinguishes error, estimate and methodology or boundary change and preserves the originally published information and rationale.
Behaviour Type: Transparency of change · Non-compensable Requirement: No
E.8-B03
Does not claim comparability where the underlying scope, method or evidence cannot support it and makes limitations visible.
Behaviour Type: Comparability discipline · Non-compensable Requirement: No
Typical tasks · 4
E.8-T01
Identify and classify the error or change and map affected periods, metrics, targets, reports, calculations, systems and submissions.
Primary Output Link: E.8-O01
E.8-T02
Assess restatement criteria, evidence, feasibility, materiality, consistency and user implications and select the treatment.
Primary Output Link: E.8-O01
E.8-T03
Recalculate affected periods or prepare a like-for-like or qualitative bridge and reconcile to previously published information.
Primary Output Link: E.8-O02
E.8-T04
Obtain approval, update controlled outputs, explain nature and effect and retain original and revised versions and correction links.
Primary Output Link: E.8-O03
Expected outputs · 3
Level 1 · Foundation
E.8-L1-01
Can apply an established comparative and change procedure, update affected records and prepare specified reconciliations and disclosure fields.
Indicator Dimension: Task execution
E.8-L1-02
Can distinguish obvious error, estimate and methodology changes and escalate material, legally sensitive or non-reperformable cases.
Indicator Dimension: Quality, judgement and accountability
Level 2 · Practitioner
E.8-L2-01
Can independently assess and implement comparative treatment for a moderately complex reporting change and produce a reconciled bridge and explanation.
Indicator Dimension: Task execution
E.8-L2-02
Can resolve routine evidence and feasibility issues, coordinate cross-channel updates and explain comparability limitations and approval needs to management.
Indicator Dimension: Quality, judgement and accountability
Level 3 · Advanced Practitioner
E.8-L3-01
Can design or critically review enterprise comparative, restatement and methodology-change governance across multiple metrics, reports, targets and jurisdictions.
Indicator Dimension: Method design and review
E.8-L3-02
Can challenge selective or retrospective trend management, resolve significant non-comparability and correction issues and advise governance bodies on treatment, disclosure and residual risk.
Indicator Dimension: Leadership and governance
Illustrative evidence · 6
E.8-E01
Comparative and restatement assessment memorandum with classification, criteria, options and decision.
Evidence Type: Work product
E.8-E02
Prior-period bridge and recalculation schedule reconciled to originally published information.
Evidence Type: Work product
E.8-E03
Methodology-change, approval and disclosure record covering affected channels and effective versions.
Evidence Type: Work product
E.8-E04
Original, revised, source, calculation, change and archive trail.
Evidence Type: Process evidence
E.8-E05
Documented methodology, finance, accounting, legal, specialist, management or governance review and the practitioner's response.
Evidence Type: Review evidence
E.8-E06
Observed explanation and defence of a restatement or non-comparability decision.
Evidence Type: Observed performance
Assessment · 3
E.8-A-L1
Change-classification exercise, comparative bridge and situational judgement
Correct classification; reconciliation; consistency; recognition of material and legal or methodology questions.
E.8-A-L2
Integrated restatement case and professional memorandum
Classification and criteria; recalculation; comparability and materiality; channel control; approval and retention.
E.8-A-L3
Complex trend-management case, portfolio and oral defence
Method design; neutrality and archive integrity; legal and market sensitivity; governance challenge and oral defence.
| From | To | Type | Rationale |
|---|---|---|---|
| D.5 | E.8 | Method, data and analytical linkage | Methodology, comparative and restatement changes require controlled impact and regression review. |
| E.3 | E.8 | Change and lifecycle linkage | Base-year, target and progress changes may require recalculation, comparative treatment and disclosure. |
| E.8 | D.5 | Change and lifecycle linkage | Errors and methodology changes are managed through controlled issue, decision and change processes. |
| E.8 | E.3 | Method, data and analytical linkage | Target and baseline recalculations require comparative and change governance. |
| E.8 | E.9 | Evidence and traceability linkage | Original and revised versions, calculations and disclosures must remain traceable. |
| E.8 | G.11 | Disclosure, claims and publication linkage | Changes to published information may require controlled correction, restatement and archive actions. |
| E.8 | A.5 | Change and lifecycle linkage | External reporting amendments may trigger methodology and comparative changes. |
| G.1 | E.8 | Method, data and analytical linkage | Errors, restatements and methodology changes affect the comparability and explanation of performance. |
| G.8 | E.8 | Method, data and analytical linkage | Comparative and restatement decisions affect consistency across periods and outputs. |
| G.10 | E.8 | Method, data and analytical linkage | Technical comparative and restatement treatment is translated into clear presentation and change explanation. |
| G.11 | E.8 | Change and lifecycle linkage | Published corrections and restatements depend on approved comparative and methodology-change decisions. |
| Role | Target level | Relevance | Evidence expectation |
|---|---|---|---|
| Corporate Sustainability Reporting Practitioner | Practitioner | Required? | A case or work sample demonstrating independent performance, documented judgement and a reviewable professional output. |
| Sustainability Reporting Manager or Lead | Advanced Practitioner | Role-defining? | A complex case or verified portfolio, supplemented by oral or observed defence, demonstrating method design, challenge and governance capability. |
| Sustainability Reporting Adviser or Consultant | Advanced Practitioner | Role-defining? | A complex case or verified portfolio, supplemented by oral or observed defence, demonstrating method design, challenge and governance capability. |
| Sustainability Data, Systems and Controls Specialist | Advanced Practitioner | Role-defining? | A complex case or verified portfolio, supplemented by oral or observed defence, demonstrating method design, challenge and governance capability. |
| Assurance Readiness and Reporting Quality Specialist | Advanced Practitioner | Role-defining? | A complex case or verified portfolio, supplemented by oral or observed defence, demonstrating method design, challenge and governance capability. |
| Investor, Capital Markets and Ratings Disclosure Specialist | Advanced Practitioner | Role-defining? | A complex case or verified portfolio, supplemented by oral or observed defence, demonstrating method design, challenge and governance capability. |