The Baltic Sea INTERREG IIIB Neighbourhood Programme is applying so called Lead Partner Principle. This means that each project has to appoint a Lead Partner, a partner having the overall responsibility for the project. This partner signs the Subsidy Contract, the main project contract, with the Managing Authority of the programme and undertakes full financial and legal responsibility for the internal part of the project. Having one partner in charge, helps to keep a transnational joint project together and prevents it from falling into some local actions only with no common goal.