As you want to get the details that qualifications which are required to become a customs officer so here is the information of the same for you:

Firstly candidates must have passed graduation with minimum of 50% from the recognized university

Secondly you need to give the exam of UPSC civil services

As part of it you will need to first clear the prelims, then there will be a final exam. You can select from the optional subjects given in the UPSC

On clearing that you will need to appear for an interview.

The main qualification required is that you will need to have a bachelors degree.

There is no restriction on the area of specialisation during graduation.

It is important that you be physically fit.