The statement "conducted in conformance with the International Standards for the Professional Practice of Internal Auditing" in audit reports can be used by the internal audit activity only if the results of a quality assurance and improvement program (QAIP) confirm that the internal audit activity adheres to the IIA Standards and there are no material issues. The QAIP includes both internal and external assessments to ensure that the internal audit activity maintains the required level of quality and effectiveness in its operations.
Positive results from these assessments validate the use of the conformance statement in audit reports.
IIA Standard 1300: Quality Assurance and Improvement Program
IIA Practice Guide: Quality Assurance and Improvement Program

The feedback from operational management highlights a lack of effective communication. While the internal audit team effectively communicated the audit findings, they failed to adequately consider and integrate management's input on resolving the issues. Improving communication skills would help the internal audit team to better engage stakeholders throughout the audit process and integrate their perspectives into the audit recommendations effectively.
The Institute of Internal Auditors (IIA) - Competency Framework for Internal Auditors

Competency assessment tools are designed to evaluate the internal audit team's skills and identify areas needing improvement. IIA standards recommend regular assessments to ensure the audit team is sufficiently skilled to perform effective audits.

If fraud is suspected during an audit engagement, the internal audit activity should first expand audit testing to gather sufficient and appropriate evidence to confirm or dispel the suspicion. This may involve applying additional or alternative audit procedures, such as data analysis, interviews, observations, or confirmations.

Evaluating organizational culture requires insights into ethics, values, and behavior. The combination of the ethics policy, structured employee interviews, and communicated organizational values provides a comprehensive view, as recommended by IIA standards for governance audits.