Description

A focused course, tailored for you

ESRS Assurance-Ready Sustainability Reporting

Build client disclosures that hold up under limited assurance from the first filing cycle.

CSRD first-wave clients are filing ESRS-compliant reports while limited assurance requirements arrive simultaneously. The disclosure exists on paper. The evidentiary trail that lets an auditor sign off often does not.

$199 one-time

Tailored to your situation. Access within 24 hours. 30-day money-back.

Includes a hand-built implementation playbook delivered alongside course access, generated for your specific situation.

Why this course

Sustainability Reporting Senior Managers at advisory firms are caught between two timelines: the client's filing deadline and the assurance team's fieldwork start date. The double materiality assessment is complete. The ESRS data points are mapped. But the data lineage documentation, boundary evidence, and management assertion packs that an assurance engagement actually requires are assembled last-minute, under audit pressure, from spreadsheets nobody built for scrutiny. The result is a findings letter that damages the client relationship and the firm's reputation on the engagement. This course teaches how to build assurance-readiness into the disclosure process from the first draft, not as a retrospective add-on.

What you walk away with

Design a CSRD engagement workplan that embeds assurance-readiness milestones from scoping through filing.
Build topic-level data lineage documentation that satisfies ISAE 3000 limited assurance fieldwork requirements.
Conduct a double materiality assessment that produces a defensible, auditable evidence pack, not just a heatmap.
Reconcile ESRS disclosures against GRI, TCFD, and SFDR references without creating contradictions an auditor will flag.
Prepare the management assertion letter and boundary documentation before fieldwork begins.
Identify and close the three most common assurance findings on ESRS E1 and S1 topics before the opinion is issued.

The 12 modules

Module 1. The CSRD Assurance Landscape: What Limited Assurance Actually Requires

Maps the ISAE 3000 and ISSA 5000 requirements that govern ESRS limited assurance engagements. Explains what an assurance practitioner tests versus what a preparer assumes they test. Covers the distinction between reasonable and limited assurance in the CSRD timeline, and why the first filing cycle is the highest-risk engagement most advisory firms will run this year.

Module 2. Double Materiality Assessment: From Heatmap to Evidence Pack

Most CSRD engagements produce a double materiality heatmap. Few produce the evidence pack an auditor needs to verify the assessment was conducted rigorously. This module covers stakeholder evidence documentation, IRO identification records, the scoring rationale log, and the threshold decision memo that turns a workshop output into an auditable artefact.

Module 3. ESRS Data Architecture: Building for Auditability, Not Just Disclosure

Covers the data model an ESRS disclosure actually requires: source systems by ESRS datapoint, collection methodology per topic, aggregation logic documentation, and the reconciliation bridge between operational data and reported figures. Includes a template data lineage register organised by ESRS topic that assurance teams can follow without a briefing call.

Module 4. Topic-Level Data Lineage: The Document Assurance Teams Pull First

Walks through building the data lineage pack for each material ESRS topic. Covers source identification, transformation documentation, quality control evidence, and the approval chain from data owner to disclosure signatory. Uses E1 (Climate change) and S1 (Own workforce) as worked examples because they are the two topics most likely to receive assurance attention in the first filing cycle.

Module 5. Scope 3 Category Reconciliation: Closing the Gap Before Fieldwork

Scope 3 category coverage is the most common E1 finding in ESRS limited assurance engagements. This module covers category identification methodology, spend-based versus activity-based calculation documentation, the category exclusion justification memo, and the reconciliation bridge between GHG inventory totals and ESRS E1-6 disclosure figures. Includes the checklist assurance teams use to evaluate completeness.

Module 6. ESRS-GRI-TCFD Reconciliation Without Contradiction

Clients with existing GRI or TCFD disclosures face a reconciliation risk: ESRS topic definitions do not map cleanly to legacy standards. This module covers the cross-reference methodology that prevents auditors from flagging material contradictions between a client's ESRS report and their concurrent GRI index or TCFD disclosure. Includes a worked reconciliation table for the most common divergences.

Module 7. Boundary Documentation: Entity, Value Chain, and Scope Definitions

ESRS boundary decisions (reporting entity, value chain scope, consolidation method) must be documented in enough detail for an auditor to verify consistency across topics. This module covers the boundary decision memo structure, the upstream and downstream inclusion justification, the franchise and leased asset treatment log, and the boundary consistency check that prevents cross-topic inconsistencies from appearing in fieldwork.

Module 8. The Management Assertion Letter: Drafting It Before Fieldwork Starts

The management assertion letter is the document that frames everything an assurance practitioner tests. Most clients draft it under time pressure after fieldwork begins. This module covers drafting the assertion letter during disclosure preparation, the claims it must and must not make under ISAE 3000, the internal sign-off process that gives it evidentiary weight, and the review checklist for catching overstatements before the auditor sees them.

Module 9. Assurance Readiness Review: Running Your Own Fieldwork Simulation

Before an assurance team arrives, the advisory engagement team should conduct a structured readiness review that mirrors the assurance methodology. This module covers the readiness review workplan, the documentation gap analysis template, the interview guide for data owners, and the findings log format that lets the engagement team close gaps systematically before the assurance team identifies them.

Module 10. SFDR and Taxonomy Alignment: Managing Cross-Regulatory Consistency

Large-company clients in financial services simultaneously file ESRS disclosures and SFDR entity-level statements. The overlap on PAI indicators, taxonomy alignment, and due diligence process documentation creates a consistency requirement that neither assurance team explicitly owns. This module covers the cross-regulatory consistency check methodology and the shared evidence pack structure that serves both sets of requirements.

Module 11. Findings Management: Responding to a Draft Assurance Report

When the assurance team issues a draft report with findings, the engagement manager needs to triage quickly: which findings are technical errors the disclosure can correct, which are scope questions requiring a management decision, and which require a disclosure restatement. This module covers the findings triage framework, the client communication protocol, the correction documentation standard, and the response letter structure that closes findings cleanly.

Module 12. Engagement Quality and Year-Two Readiness

The first CSRD filing cycle establishes the baseline. Year two is where assurance scope typically expands and reasonable assurance becomes the standard for some topics. This module covers building the client's year-two readiness plan from year-one findings, the quality control framework for the advisory engagement itself, and the knowledge transfer protocol that lets the client's internal team own more of the assurance preparation process over time.

How this addresses your situation

Specific modules that map to what you said you are dealing with.

Client's double materiality assessment is complete but the evidence pack is thin: start with Module 2, then Module 9.

Assurance fieldwork starts in under four weeks: run Module 9 first to identify gaps, then Modules 3, 4, and 8 to close them.

Client has legacy GRI or TCFD disclosures and is filing ESRS for the first time: Module 6 first, then Module 7.

Scope 3 is the identified high-risk area for the engagement: Module 5 directly, then Module 4 for the broader data lineage approach.

What you get with this course

12 written modules covering the full ESRS assurance-readiness methodology from double materiality to findings management
Data lineage register template (by ESRS topic, ready to populate for E1 and S1 immediately)
Double materiality evidence pack template with scoring rationale log and stakeholder evidence documentation
Assurance readiness review workplan and documentation gap analysis template
Management assertion letter drafting guide with ISAE 3000 compliance checklist
ESRS-GRI-TCFD reconciliation table for the most common divergences
Hand-built implementation playbook tailored to your engagement context, delivered alongside course access

What you will have in hand by Day 1, Week 1, Month 1

Within 24 hours your account in the learning environment is provisioned and the tailored implementation playbook is delivered alongside it.

Before and after

Before

Disclosure is complete on paper. Assurance fieldwork starts next month. The data trail behind three material topics is thin, the management assertion letter has not been drafted, and the engagement team is hoping the auditors do not look too closely at Scope 3 category exclusions.

After

Every material topic has a documented data lineage register. The double materiality evidence pack is auditable. The management assertion letter is drafted and signed before fieldwork starts. The readiness review has already surfaced and closed the gaps that would have become findings.

What happens if you do not address this

A qualified or adverse limited assurance opinion on a client's first ESRS filing damages the client relationship, creates reputational risk for the engagement, and sets a difficult baseline for year-two when assurance scope expands. First-cycle findings on documentation gaps are preventable with preparation. They are very difficult to explain to a client after the fact.

Who it is for

Sustainability reporting senior managers and directors at advisory and professional services firms who are leading CSRD implementation engagements for large-company clients. You hold the technical standard knowledge. What this course adds is the operational methodology for building disclosures that pass limited assurance the first time.

Who this is NOT for. ESG data analysts building internal dashboards. Corporate sustainability teams filing on their own behalf. Anyone not directly responsible for the quality and auditability of a client's ESRS disclosure.

How it arrives

Text-based course in the Art of Service learning environment, plus downloadable templates and worked examples for every module, plus the hand-built implementation playbook delivered alongside course access.

Time investment. 12 modules designed for focused reading in 60-90 minutes each. Most practitioners complete the modules directly relevant to their current engagement within the first week and work through the remaining modules as the engagement progresses.

Why $199 is the right number

CSRD training programmes from professional bodies cover the standards. They do not cover the assurance-readiness operational methodology that turns standard knowledge into a defensible filing. This course fills that gap specifically for advisory professionals preparing client disclosures for limited assurance scrutiny.

FAQ

Does this course cover the ISSA 5000 standard specifically?

Yes. Module 1 covers both ISAE 3000 and ISSA 5000, including the differences that matter for ESRS engagements and how the ISSA 5000 adoption timeline affects current-cycle assurance scope.

Is this relevant for clients filing under ESRS for the first time versus clients with existing sustainability reports?

Both. The core methodology applies to first-time filers. Module 6 addresses the specific reconciliation challenge for clients with legacy GRI or TCFD disclosures who are filing ESRS for the first time.

How does the tailored implementation playbook work?

Within 24 hours of purchase, you receive access to the course and a hand-built playbook structured for your specific engagement context. Reply with a note about your current engagement and it is built around that.

30-day money-back guarantee. If after a week of working through the materials this is not what you needed, reply to the receipt email and a full refund is processed. No questions, no forms.

Within 24 hours your account in the learning environment is provisioned and the tailored implementation playbook is delivered alongside it.