Validation is important because it provides an alternative route into higher education for people who did not have the opportunity to enter directly from school or who have been denied that opportunity for social and economic reasons.  For newcomers it also offers help to overcome the effects of conflict, political and economic crisis and the disruption to their personal and professional development that has followed.
Access to education and training is extremely important for
access to the labour market,
to active participation in society,
and to the cultural life of society,
and so to social inclusion.
This will be important for an application for permission to stay and work or for citizenship.