There are no disadvantages to project planning. But, if not done properly or not implemented correctly, it may lead to some problems. Some of the possible disadvantages include:
• Some managers do not consider that changes in environment or project variables can affect the project plan. Such complacency may affect the project’s success.
• Some managers plan a lot but do not put the plan into action. If planning does not lead to execution, then it does not serve any purpose.
• If managers believe in following the plan exactly, then it obstructs creativity. Team members may not feel encouraged to experiment, innovate, and take initiative.