As social issues surrounding government become more diverse and complex, and digital technology as a means of solving them advances rapidly, there is an increasing need for frontline business departments to proactively address issues through Digital Transformation initiatives. The knowledge, skills and mindset required for them are often referred to as “digital competency.“ Various models of digital competency have been developed by international organizations such as the OECD, the UNESCO, and the EU, depending on specific user groups such as administrative staff, or specific purposes such as AI utilization. Some countries refer to these and develop models suitable for their own country. Digital competency models at the organizational level are significant as guidelines for human resources departments and DX promotion departments to identify the competencies necessary to achieve organizational goals. However, this does not meet the needs of frontline business departments who want to identify what competencies are required for each individual issue or DX theme. This study presents a method for identifying competencies from the bottom up, starting from the problem-solving scene, and clarifies the characteristics and significance of the derived competencies. Furthermore, it illustrates what becomes possible through this approach that could not be achieved with traditional organization-based digital competency frameworks.