This is called a Three Wall Violation.
To understand this rule, you need to understand the Passing rule. The International Table Soccer Federation Rule Book covers passing in Rule 23:
23.1 A ball which is advanced from a pinned or stopped position on the five-man rod cannot be directly caught on the three-man rod of the same team regardless of whether or not the ball is touched by the opposing five-rod. The ball must touch at least two player figures prior to advancing to legally be caught on the three-man rod. A pinned ball is one that is pinned to the wall or playfield.
Basically, this means that you cannot pin (stop) the ball at your five-man rod, then pass it to your three-man rod.
To get around this, if you have the ball stopped on your five-rod, you can either pass the ball back to your defense, or you can bounce the ball off the wall before advancing it. However, you can't keep bouncing the ball off the wall over and over. Rule 23.2 covers...