Answer: 1. Planning should not be rigid.
2. Planning does not guarantee success
Step-by-step explanation:
The limitations of planning which led to decline in it sales are that planning should not be rigid and that planning doesn't always guarantee success.
Planning brings about rigidity. A plan that well defined is usually Dewan along with the goals that needs to be achieved and this is used in deciding the future curse of action that'll be taken. This can bring about rigidity in the organization. In this case, the managers of Super Fine Rice Ltd. continued to rely on it's previously tried and tested successful plans which didn't work because the environment is not static.
Also, planning does not guarantee success. Success can only be achieved in a situation whereby the plans are implemented properly. A plan that isn't implemented and translated into action will become meaningless.