Hi ram as you said
I already did some research about applying for the exam.
if you done the research can't find you this BODS Certification Preparation blog 
Like what study material was used
The following below link helps you to identify the topics covered in this test and also Exam Pattern.
How was the exam paper.
here is some sample questions for your exam
https://training.sap.com/shop/uploads/C_BODI_20_sample_questions_final.pdf
all the best to you exam
regards
poorna