Professional Competence explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Subsection 5113 requires a sustainability assurance provider to attain and maintain professional knowledge and skill at the level needed for competent service and to act diligently under applicable technical and professional standards. It adds two operative duties: reasonable steps to ensure those working under the practitioner's authority are trained and supervised, and explaining the inherent limitations of the work to clients and other users.
The requirement, in two limbs
R5113.1 — the practitioner shall "(a) Attain and maintain professional knowledge and skills at the level required to ensure that a sustainability assurance client receives competent professional service, based on current technical and professional standards and relevant legislation; and (b) Act diligently and in accordance with applicable technical and professional standards."
Limb (a) is about capability; limb (b) is about how the capability is deployed. Paragraph 5113.1 A1 links them: serving clients with professional competence involves the exercise of sound judgment in applying professional knowledge and skill when undertaking professional activities.
What counts as the necessary skill
Paragraph 5113.1 A2 makes a point that matters more in sustainability assurance than in a financial audit: the knowledge and skills necessary vary depending on the nature of the activity, and in addition to technical knowledge, interpersonal, communication and organizational skills facilitate the practitioner's interaction with the entities and individuals concerned.
Paragraph 5120.5 A4 adds the subject-matter dimension when describing professional judgment: "application of knowledge of certain location-specific environmental, social, economic, cultural or other sustainability-related issues might be relevant when performing sustainability assurance engagements."
Paragraph 5113.1 A3 requires a continuing awareness and understanding of technical, professional, business and technology-related developments relevant to the professional activities undertaken. It names continuing professional development as what enables a practitioner to develop and maintain the capabilities to perform competently. In a field where reporting frameworks and metrics are still moving, a competence assessment made at acceptance does not survive the engagement unexamined.
Paragraph 5100.1a sets the same expectation at the threshold of the Part: sustainability assurance providers are expected to have relevant skills, knowledge and experience, and appropriate training to ensure their assurance skills are continually up to date.
Diligence, defined
Paragraph 5113.1 A4 defines the second limb: "Diligence encompasses the responsibility to act in accordance with the requirements of an assignment, carefully, thoroughly and on a timely basis." Timeliness sits inside the definition — a thorough conclusion delivered late is not a discharge of due care.
Two further requirements that are easy to miss
| Paragraph | Requirement | What it means in practice |
|---|---|---|
| R5113.2 | Take reasonable steps to ensure that those working in a professional capacity under the practitioner's authority have appropriate training and supervision. | The obligation is personal to the practitioner with authority, not discharged by the firm's HR function. It reaches everyone working under that authority, including those brought in for a single engagement. |
| R5113.3 | Where appropriate, make clients or other users aware of the limitations inherent in the activities and explain the implications of those limitations. | Naming the limitation is not enough — the implication has to be explained. This is the paragraph that governs how a limited assurance conclusion, an estimation uncertainty or a value-chain data gap is communicated. |
Paragraph 5120.5 A7 cross-refers to R5113.3 when describing how complexity is managed: making the firm and, if appropriate, relevant stakeholders aware of the inherent uncertainties or difficulties arising from the facts and circumstances.
The value chain problem
Paragraph 5300.7 A4a is specific to this principle and to this Part:
"The sustainability assurance provider's evaluation of the level of a threat might be impacted by the quantitative and qualitative characteristics of a sustainability assurance client's value chain. For example, the evaluation of a threat to compliance with the principle of professional competence and due care might be impacted if the sustainability information that is subject to assurance comes from multiple suppliers that are geographically dispersed or is prepared in accordance with different reporting frameworks."
This is the paragraph that turns a scoping fact into an ethics question. Where a client's Scope 3 or supply-chain disclosures draw on many jurisdictions, languages and frameworks, the competence threat is higher, and the conceptual framework requires that to be evaluated and addressed — by additional expertise, by involving another firm, or by declining.
Practical checklist
- Assess competence against the specific subject matter — sector, metric, geography and framework — not against assurance experience generally.
- Re-test competence during the engagement as the scope or the framework moves; 5113.1 A3 makes it a continuing obligation.
- Map the value chain and treat dispersion and framework diversity as raising the competence threat (5300.7 A4a).
- Document the training and supervision arrangements for everyone working under your authority (R5113.2).
- Draft the communication of inherent limitations so that the implications, not only the limitations, are explained (R5113.3).
- Where the gap cannot be closed, apply the conceptual framework — assigning qualified personnel and additional time, or involving another firm, are named safeguards in 5300.8 A2.
Common mistakes
- Equating financial audit competence with sustainability assurance competence.
- Assessing competence only at acceptance and never again.
- Delegating supervision to the firm when R5113.2 places the duty on the practitioner with authority.
- Disclosing a limitation without explaining its implication, which is only half of R5113.3.
- Treating a dispersed value chain as a scoping inconvenience rather than a factor in evaluating an ethics threat.
- Omitting timeliness from the definition of diligence.