So what is the underlying need for the Concurrent List in the Constitution?

There is no doubt that uniform laws are needed in national interest and therefore Parliament has been given legislative power over these subjects. But at the same time, issues/problems on ground can vary from state to state and this requires varied approach on a case-by-case basis. Given such a situation state laws are more relevant, even though the Central government can provide broad directions/guidelines. Thus, arises the need to have a Concurrent List in the Constitution to ensure good governance for the citizens. Recommendations of Sarkaria Commission have been discussed ahead with regards to the Concurrent List.