Given that the CFO dismissed the concern due to a lack of understanding of the data analytics test and the perceived insignificance of the transaction, the internal auditor should improve soft skills, specifically communication and negotiation. Enhancing these skills would help the auditor better explain the significance of findings and persuade management of the need to address such issues, regardless of transaction value.References: Institute of Internal Auditors (IIA) - Competency Framework for Internal Auditors