accountability
Verantwortlichkeit is the German term for accountability. It is used in the same way as in English, to express the obligation or willingness to accept responsibility for one's actions. This term is often used in professional and legal contexts.
The responsibility for the project lies with the project leader.
This sentence is stating that the person in charge of the project, known as the project leader, is the one who is responsible for it.
He did not accept responsibility for his actions.
Here, the person in question is refusing to accept that he is the one responsible for the actions that he performed.
The responsibility for this decision lies with you.
In this sentence, the speaker is telling someone that they are the ones who are responsible for making a particular decision.