The greatest challenge for a risk practitioner during a merger of two organizations is the variances between organizational risk appetites, as they may indicate a significant difference in the risk culture, strategy, and objectives of the two organizations, and may require a complex and lengthy process of alignment and integration. Different taxonomies to categorize risk scenarios, disparate platforms for governance, risk, and compliance (GRC) systems, and dissimilar organizational risk acceptance protocols are not the greatest challenges, as they are more related to the technical, operational, or procedural aspects of risk management, rather than the strategicor cultural aspects of risk management. References = CRISC Review Manual, 7th Edition, page 109.