Data subjects should have legal right to request their old personal data; however, current legislation did not provide this right for them.

There are number of national and European regulations to support this scenario; however, lack of sufficient regulation on national level could prevent seamless implementation of the OOP in moving domain.

Currently, there are many car insurances with different tariffs from one Member State to others. EU-wide legislation is necessary to harmonised different aspect of car insurance including tariff. While this shortage does not threat implementation of this scenario, it would be needed for more development of the scenario.

An EU level agreement on compensations in case of accidents and a legal basis for court cases could be helpful for further development of the scenario. These are hampered by the different socio-economic levels of the different EU Member States.

Lack of regulation to facilitate secure data exchange at national level is observed not only between public administrations but also between public and private organisations. A legal framework to clarify data exchange in each OOP scenario is needed.

There are many bilateral Double Tax Agreements among Member States that support the implementation of this scenario; however, this needs to be strengthened by EU-wide legislation.

Different legislation in Member States could lead to uncertainty about the necessary steps in this scenario. For instance, reporting the birth in a foreign country to the country of residence is necessary according to some countries' legislation and unnecessary in some other.

Different legal setting among Member States could prevent sufficient cross-border implementation of the issuing birth certificate.

EU-wide standards characterising the required data for to issue a birth certificate could enhance the OOP implementation in this scenario. As mentioned in the scenario, multilingual standard forms are already considered for data exchange for the life event ‘birth’.

There are a variety of regulations at the European level to support the implementation of this scenario. However, the absence of legal support on national level could be considered as a barrier in this scenario.