The process of monitoring and analysing the success and failures of TSLs aims to analyse the context, barriers, and framework conditions that influence the set-up of the TSL and their cross-sectoral open innovation approach. Through the cross-fertilisation of lessons learned among the involved TSLs, the exchange of knowledge and experiences will be facilitated and enable the potential replication of the TSL approach beyond the project, starting from the follower regions of the TRANSFORMER User Forum.