The development, implementation and monitoring of a common European asylum and immigration policy requires a system of statistical information exchange on migration flows and asylum in the EU . However, these data are not always available and do not necessarily consider need for policy development. It is clear that more initiatives have to be developed in order to improve data collection and harmonisation of international migration statistics to provide reliable basic information and this is particularly important in the framework of European migration policy.
The THESIM team organised 25 national meetings and through these meetings prepared 25 country reports on the national situation, as far as data collection on international migration, asylum, residence permits and citizenship. These meetings were organised with help of all statistical offices and the NCPs (National Contact Points) of the EMN (European Migration Network); all ministries and administrations involved in the field took part, those involved in legislation, in practical procedures or in data collection.