Nowadays, the certification of applications and software systems is considered as a task of growing importance. In fact, software development life cycle itself is also considered as a matter of certification concern, especially with the emergence of new approaches. The proposal of Model Driven Architecture (MDA) shifted the software development towards modeling. However, MDA as such still lacks the appropriate implementation framework. The original article outlines a conceptual framework, which may be used as a foundation for certification of MDA tools.