This file contains data from D1.3 Key Impact Pathways for the Open Science Framework (original and updated version), a deliverable produced within the PathOS Horizon Europe project. The dataset summarises literature from the scoping review and empirical case studies, analysed to draft six Key Impact Pathways. The analysis was carried out in two phases: in the first phase, more than 40 sources were reviewed and coded, resulting in the original deliverable. In the second phase, the dataset was updated and expanded to elaborate additional pathways and produce an updated version of the report. Each row in the file represents a step in an impact chain, with coded information on the associated activity, output, outcome, and impact. This structure ensures transparency, allows tracing back to the original sources, and supports the reconstruction of impact pathways using the methodology used for Pathos D1.3.