The purpose of control is not only to detect errors and defects in performance of work, but also to adopt remedial measures. Without taking corrective actions, control has no meaning. The base of controlling process is taking actions in order to ensure that the actual activities conform to the planned activities.
For example, if actual output falls short of standard , output, we take several actions like check the raw material, check the production activities, corrective actions may be taken, analysis of standards, reassignment of duties, bring change in the style of production, etc.