Often, in organizations it is not clear who is responsible for what, and a lot of tensions arise because of this (when my idea of your role differs from your understanding). Symptoms are: unclear responsibilities, important work is missed and not done (it’s no one’s responsibility).
In organizations, it is important to clarify roles. Having explicit and up-to-date role descriptions brings clarity and trust.
At the very least, a role description should include:
domains of control (exclusive authority to control a resource, if any)