It is vitally important to have a structurally engineered solution for a high partition dividing walls because an inferior solution is likely to fail and cause danger to life as the wall could ultimately fall over with disastrous consequences. 

High wind pressures resulting from large openings such as roller shutter doors on a very windy day can exert huge pressure on dividing walls,  as the wall is acting as a diaphragm; should the wall bend as a result of the wind pressures then the wall could fall, the top of the partition wall could fall out of the head channel.

Also, very high wind pressures could raise the roof and if the correctly engineered deflection head has not been installed then the wall again could fall out of the head channel which is extremely dangerous!