The German societies of child and adolescent psychiatry, psychosomatics and psychotherapy (DGKJP) and adult psychiatry (DGPPN) have agreed upon a consensus paper on transition from child and adolescent psychiatry to adult psychiatry. The symposium presents the motivation of the two professional societies to establish a working group on transition and reports about the results and the main content of the common position paper. There is a common presentation of the two presidents of the scientific professional societies and the main authors and the first authors of the paper. Therefore, we do not propose separated abstracts nor methods or result section to the four individual contributions.