Hello Samiksha, See MICA accept two types of score : (1) MICAT (2) National level exams like CAT, XAT or GMAT scores
Now, candidates who have appeared both MICAT exam have the better chance in shortlisting as their better scores in MICAT will be considered. And then participate in GD PI. MICA will look at the MICAT score while preparing the final list of selected students. At that time CAT/XAT/GMAT score will have a weightage of 20% and MICAT score will have a weightage of 30%.
After everything, Shortlisted candidates will be displayed on their official web:
https://www.mica.ac.in/postgraduate-programme/selection-process-and-timelines
All the best
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