Hello,

To apply for Common Admission Test (CAT) you must have passed Bachelor’s Degree or B.Tech/ B.E.  from any University/ Institute. Candidates belonging to general category must score minimum 50% marks in the qualifying examination that is Bachelor's Degree. Candidates belonging to SC/ ST/ PwD category must score minimum 45% marks in the qualifying examination. Candidates who are appearing in final year examination of the qualifying Degree are also eligible to apply for CAT.

As you have scored 43% you are not eligible to apply for CAT. To check the eligibility criteria click on the link below

https://bschool.careers360.com/articles/cat-eligibility-criteria