Promotion/relegation play-offs will take place in March.
These ties will see the teams who finished third in League A playing two-legged ties against second-placed sides from League B, with winner of those takes taking place in League A.
Meanwhile, the third-place teams in League B will face the second-placed sides in League C, with winners securing their place in League B.
Finally, the two nations who finish bottom in League C with the best record will play the runners-up of League D.
League A/B play-offs: Austria, Belgium, Greece, Hungary, Scotland, Serbia, Turkey and Ukraine.
League B/C play-offs: Armenia, Bulgaria, Georgia, Iceland, Kosovo or Romania, Republic of Ireland, Slovakia and Slovenia.
League C/D play-offs: Gibraltar, Latvia, Luxembourg and Malta.