PLUG CONNECTOR SYSTEM

A plug-in connector system includes a multi-point connector, an electrical plug connector that can be attached to the multi-point connector, and a locking element for locking the electrical plug connector to the multi-point connector. The multi-point connector includes a plug portion and the plug connector includes a receiving portion that has a receiving opening such that, for connecting the plug connector to the multi-point connector, the plug portion can be guided through the receiving opening so as to engage in the receiving portion. A lock receiving opening is arranged in a side wall of the receiving portion at a spacing from the receiving opening. The side wall includes a first side wall portion between the receiving opening and the lock receiving opening and a second side wall portion between the lock receiving opening and the receiving base of the receiving portion.