Abstract
The shift toward the university's "Third Mission" has intensified the need for assessing research's societal impact beyond traditional bibliometric indicators. However, a significant gap remains: the lack of a consolidated and comprehensive set of indicators suitable for the diverse operational realities of Higher Education Institutions. This developmental paper addresses this divide by systematically compiling and analysing a comprehensive pool of societal impact indicators. Using an integrative review of academic and grey literature across 16 sources, we organised the 544 indicators into analytical categories based on their relationship to impact research. Preliminary results reveal a heavy emphasis on instrumental impacts (74%) and volume-based output measurements. Conversely, contextual factors (1.7%) and realised benefits (9.6%) are underrepresented. Ongoing work involves refining this pool and developing a "Mission-Adaptive Filter" to help institutions customise metrics based on strategic objectives.