Why partial automation of storage processes?

A manual warehouse inevitably reaches its limits at some point because the parameters, based on which the distribution center was initially designed, change over time. For example, the number of items may have increased which leads to a shortage in storage locations. Or walking time and item search take too long, causing an interrupted material flow. Or the picking speed is not fast enough and too many picking errors are made so that supplied end customers are no longer satisfied. Furthermore, the shortage in skilled staff as well as a fluctuating demand additionally impede the daily business in the logistics center.