This deliverable presents the TOOP pilot participants’ perception of the key barriers and drivers for the cross-border implementation of the once-only principle (OOP), which were studied on the basis of a literature review, survey, focus group interviews and workshops. In regards to legal challenges, key concerns for cross-border OOP implementation include meeting the requirements of lawfulness and compliance, legal value and validity of data exchanged, privacy, data protection and protecting confidentiality. Key technical barriers are found around technical and semantic interoperability. The study also identified that reluctance to change existing systems may act as a barrier; it is therefore expected that the architecture for cross-border OOP is compatible with existing national solutions. Organisational and political barriers relate to organisational inertia, low political prioritisation of the OOP, multiple stakeholders and interests, limited resources, organisational interoperability and different pricing policies. Last but not least, demonstrating the benefits for businesses and public administrations is perceived very important.

Tarmo Kalvet, Maarja Toots, Robert Krimmer. 2017. The Once-Only Principle Project: Drivers and Barriers for OOP