It well acknowledged in training evaluation literature that the actual barrier and obstacle to training effectiveness comes from within the human resources development functions. For instance, the appraisal system may be inadequate to and poorly executed to identify the skill gaps. Some establishments do not have reliable job descriptions, the connection between training function and other personnel functions such as succession and career planning must be streamlined to facilitate proper synergy to take place. Other notable barrier may be political or structural in nature. To overcome this barrier training must be defined in term of either training based on poor performance or defined based on organizational objectives, although both directly related.