What is the difference between tentative answer key and final answer key?

What is the difference between tentative answer key and final answer key?

The Tamilnadu Public Service Commission TNPSC releases the answer key for the question papers of exams conducted by the board. This answer key will be released in the official website of TNPSC.

The tentative answer key means the answer key which is released within a week after the commencement of examination.

If the candidates find any doubts or wrong in the answer key they can report it to the commission after the release of tentative answer key.

The final answer key will be released after making changes if any, and based upon which the answer sheet will be validated.