The PlayStation Network is experiencing some technical difficulties just as many players are experiencing the same issue, having recently been disconnected from their game session.
The PlayStation Network may disconnect the player from your game and return the following message: "This content cannot be used. Please wait until you verify the license." This error can usually be fixed by resetting the licenses in the PlayStation system menu, although this technique appears to be useless in this situation.
Sony has acknowledged the issue in the section Games and Social on its official website, and in all probability, the technical support teams have already been asked to restore the correct functioning of the internet infrastructure as soon as possible.
The PSN may therefore have overloaded, yet we await Sony's best news.