Dear Chandan,
It would be an undue pressure on a fresher to force to appear for an SAP Certification?
You have not mentioned whether your company is sending your for official SAP training at SAP / SAP Authorised Partners? If the answer is no and you are also not intending to appear on your own and if you are in India, they you CANNOT write certification, as you do not have relevant experience and you are not trained at SAP / ATCs.
Before, committing anything, ensure you are eligible to appear for certification.
Best Regards,
Ravi
Have a good look at the following blogs, they could be handy for you.
Frequently Asked Questions (FAQ) regarding SAP Certification & Career Opportunities