Let say, your NIM in Undiksha is 1629101999.
Let’s decode it:
16 is last 2 digits of your entry year.
29 is a code for S2 (1st digit = 2) and a code for Pasca (2nd digit = 9).
101 is a code for Program Magister Ilmu Komputer Undiksha.
999 is student order number.
Now, you know what your NIM mean.