Hi there!
About the Symbiosis International University it’s a university similar to Mumbai University.
SIU (or SIDU now, D stands for Deemed) has several colleges under it which together compromise the University, Symbiosis Institute of Technology being one of them.
So when you do graduate from SIT, you will get the degree from SIU and not from SIT.
Hope that clears your questions. All the best! ✌️