From ESG Storytelling to Assured Disclosures: Why “Other Information” Can Undermine Your Sustainability Report

As sustainability reporting becomes more decision-critical, many organisations are investing in independent assurance to strengthen credibility. However, a common and underestimated risk remains: assurance over sustainability information can be undermined by what sits next to it—the unassured narrative, commentary, and promotional language often included in annual reports, sustainability reports, websites, and investor decks.

Under ISSA 5000-style sustainability assurance reporting, practitioners may have responsibilities relating to “other information,” but those responsibilities are often misunderstood by boards, investors, and management teams. The illustrative reporting guidance demonstrates that other information is typically not subject to assurance, even when it appears in the same publication as the assured sustainability information.

This article explains what “other information” means in sustainability assurance contexts, why it creates governance and reputational exposure, and how boards and executive teams can implement disclosure controls that protect the value of assurance.

1) The credibility paradox: assured metrics next to unassured narratives

Many sustainability reports contain two distinct “layers” of content:

1. Metrics and disclosures (emissions, workforce indicators, governance disclosures, targets, progress measures)

2. Narrative and commentary (CEO messages, strategy stories, case studies, claims of leadership, forward-looking transition narratives)

Assurance usually applies to the first layer (or parts of it), not the second. The problem is that stakeholders rarely read reports in layers—they read them as one integrated message. If the narrative makes claims that are inconsistent with assured disclosures, stakeholders may conclude that the entire report lacks integrity, even if the assured metrics are sound.

In other words: the value of assurance can be diluted by unassured statements that overreach.

2) What “other information” means in ISSA 5000-style reporting

The illustrative guidance includes report wording addressing circumstances where sustainability information is published alongside other content—commonly in an annual report or broader corporate report. In these cases, the practitioner typically reads the other information and considers whether there is a material inconsistency or apparent material misstatement, but makes it clear that the other information is not subject to assurance.

This distinction is essential:

• Reading other information is not the same as assuring other information.

• The practitioner’s procedures on other information are limited in purpose and scope.

• Users should not assume that narrative statements, photographs, marketing claims, or CEO letters have been verified.

For boards and executives, this is not merely a technical nuance. It is a reputational reality: if stakeholders misunderstand what was assured, your organisation may be exposed to allegations of “greenwashing” or credibility gaps.

3) Why “other information” risk is increasing now

Several trends are converging:

A. Sustainability reporting is moving into regulated territory

As regulatory frameworks expand, inconsistencies between assured disclosures and unassured narrative can attract scrutiny—especially if narrative implies compliance or performance that the assured information does not support.

B. Investors are integrating ESG into risk and valuation assessments

Investors increasingly treat sustainability information as a proxy for management quality and resilience. A mismatch between assured disclosures and narrative undermines confidence and can become a signal of weak governance.

C. Sustainability reporting is increasingly integrated with financial reporting

Annual reports blend audited financial statements, sustainability disclosures, and strategy narratives. The closer these sit together, the more users assume comparable reliability—unless governance mechanisms manage the boundaries clearly.

4) Common “other information” pitfalls that erode assurance value

Below are typical patterns where unassured narrative can create problems—even when the sustainability metrics are assured.

Pitfall 1: Overstating the assurance level

A common communications error is describing limited assurance as though it were reasonable assurance. Users often do not understand the difference, and the risk is amplified if the narrative says “verified,” “validated,” or “certified” without clarifying scope and assurance level.

The illustrative guidance reinforces the importance of clear, non-misleading descriptions of what was done and what level of assurance was obtained.

Practical control: any public statement referencing assurance should be reviewed through a disclosure-control lens to ensure it mirrors the language of the assurance report and does not imply a higher level of comfort than obtained.

Pitfall 2: Claims of achievement when the disclosures show “in progress”

Narrative statements like “we have achieved best-in-class sustainability” can conflict with disclosures that show partial coverage, incomplete data, or early-stage programmes.

Practical control: ensure narrative claims are anchored to specific, measurable disclosures, and avoid broad superiority language unless there is evidence and clear benchmarking.

Pitfall 3: Using case studies to imply enterprise-wide performance

Sustainability reports often highlight a success story in one site, one department, or one region. Stakeholders may infer that the case study reflects the whole organisation.

Practical control: add boundary language that clarifies whether the story is illustrative, pilots, or representative, and ensure it does not contradict enterprise-wide indicators.

Pitfall 4: Forward-looking transition narratives that exceed evidential support

Transition plans and future commitments are increasingly central to sustainability reporting. The illustrative report language explicitly notes that sustainability information may include forward-looking information based on hypothetical assumptions, and warns against using it beyond its stated purpose.

This is precisely where narrative risk arises: marketing language often expresses forward-looking ambition with certainty, while the disclosures acknowledge uncertainty.

Practical control: ensure forward-looking claims are framed appropriately—stating assumptions, dependencies, and governance oversight—and avoid definitive language where the underlying basis is hypothetical.

Pitfall 5: Internal inconsistency between narrative and assured metrics

Examples include:

• “We are reducing emissions rapidly” while Scope 1 and 2 emissions are flat or increasing.

• “Our governance is robust” while governance disclosures show gaps in board oversight, risk processes, or controls.

• “We are aligned to net zero” while targets are not scoped, not time-bound, or not supported by a transition plan with measurable milestones.

Practical control: a formal “consistency review” that reconciles all narrative claims to the assured disclosures and the stated criteria.

5) What the practitioner does (and does not) do with “other information”

It is important for boards to understand the boundary between management responsibility and the practitioner’s work.

From the illustrative approach, the practitioner typically:

• reads the other information to identify material inconsistency with the assured sustainability information or the practitioner’s knowledge obtained during the engagement

• communicates appropriately if a material inconsistency or apparent material misstatement is identified, based on professional requirements and engagement circumstances

But the practitioner typically does not:

• test the truthfulness of all narrative statements

• validate marketing claims or promotional language

• provide assurance over photographs, case studies, or CEO commentary

• take management responsibility for how the report is framed

This means organisational governance must do the heavy lifting. Assurance does not replace disclosure controls; it raises the expectation that those controls exist.

6) Why “other information” is a board-level governance issue

“Other information” risk is not merely a communications problem. It is a governance risk because it involves:

• reputational exposure (greenwashing allegations, stakeholder backlash)

• regulatory exposure (misleading disclosures, compliance risk)

• investor confidence (perceived integrity of management and reporting)

• operational credibility (supplier and customer confidence in claims)

Boards should treat sustainability reporting as part of the organisation’s disclosure ecosystem—similar to financial reporting discipline. When sustainability information is assured, boards should expect a corresponding uplift in:

• documentation quality

• sign-off accountability

• oversight and challenge

• consistency between narrative and metrics

7) How to protect the value of assurance: practical disclosure controls

A high-performing sustainability reporting program should implement structured “disclosure controls and procedures” (DCP) for sustainability information and associated narrative, aligned to the assurance scope and criteria.

A. Establish an integrated sustainability disclosure committee

In many organisations, sustainability information is produced across functions (operations, HR, procurement, compliance, finance). A disclosure committee creates coordinated accountability. Suggested membership:

• CFO or Finance leadership (controls discipline)

• Sustainability/ESG lead (content ownership)

• Legal/Compliance (regulatory risk)

• Operations/Data owners (source data)

• Communications/IR (external messaging alignment)

• Risk/Internal audit (control testing and assurance readiness)

B. Implement a “claim substantiation register”

Create a register of every material public sustainability claim, mapped to:

• the relevant disclosures

• the underlying evidence or source data

• whether the claim is within the assurance scope

• whether it is historical, current, or forward-looking

• the approved wording and limitations

C. Introduce a structured consistency review step before publication

Before publishing any report that includes assured sustainability information:

• reconcile narrative claims to assured metrics

• check internal consistency across sections

• confirm that the assurance scope and level are not overstated in executive messaging

• ensure forward-looking statements include assumptions and limitations consistent with disclosures

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D. Align external messaging to the assurance report language

Marketing language must not “upgrade” limited assurance to reasonable assurance or imply that unassured areas were assured. The illustrative guidance emphasises clarity and avoidance of misleading statements, including how procedures are described.

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E. Apply “boundary labelling” to content

Where appropriate, label content as:

• “Assured sustainability information”

• “Unaudited / unassured other information”

• “Forward-looking information (assumptions apply)”

This reduces the risk that users interpret the entire report as assured.

8) The commercial upside: managing “other information” strengthens trust

When organisations manage “other information” risk effectively, they unlock three strategic benefits:

Benefit 1: Assurance becomes a trust amplifier rather than a compliance cost

Assurance is most valuable when it increases stakeholder confidence. If narrative undermines metrics, assurance becomes an expense with reduced return.

Benefit 2: Stakeholder scrutiny becomes more manageable

Clear reporting boundaries and consistent messaging reduce the risk of reputational volatility.

Benefit 3: The organisation accelerates readiness for broader assurance scope

Disclosure control maturity makes it easier to expand from selected disclosures to wider assurance coverage over time (and potentially from limited to reasonable assurance in decision-critical areas).

Assurance credibility depends on what you say, not only what you measure

Sustainability assurance strengthens credibility—but only when the organisation governs the entire reporting ecosystem, including the unassured narrative and commentary that stakeholders will read as part of the same message.

The ISSA 5000 illustrative guidance makes the boundary clear: practitioners may read other information and consider inconsistencies, but other information is not typically assured.

The burden therefore sits with boards and management to ensure disclosures, narratives, and claims are consistent, appropriately qualified, and aligned to the assurance scope and level.

The organisations that treat “other information” as a governance-controlled risk area will protect their reputation, improve reporting integrity, and extract full value from assurance.

Next Step!

If your organisation is publishing sustainability information—especially within an annual report or integrated report—and wants to ensure that your narratives, claims, and disclosures align with your assurance scope and level, Dawgen Global can help you implement disclosure controls, strengthen governance over sustainability reporting, and prepare for credible assurance. Email us at [email protected].

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