The research in this paper has digital services innovation to support Human-Centred Service Systems (HCSSs) as a foundation. It is a conceptual paper grounded in a multi-disciplinary literature review (Service Science, Innovation Theory and Information Systems). The starting point of the literature review was the special issue on Service innovation in the digital age in MISQ 2015. In the literature review, a combination of concept-centric and author-centric approaches were used. The overriding aim of this paper is to expand our understanding of digital service innovation in Human-Centred Service Systems. The paper has adopted a Scandinavian perspective on digital service innovation in HCSSs. The posted research question is which are the characteristics of digital service innovation in HCSSs? The contribution of the paper is a problematization of digital service innovation in HCSSs from a Scandinavian perspective. In the findings three problems are proposed: the dominant understanding of value, value creation, and value co-creation are grounded in service sciences; the understanding of collaboration and participation by the service beneficiary in networks during digital service innovation and lastly is the lack of understanding regarding heterogeneity among involved actors.