This year we have to put info. exactly as it shows in SIN. Previous years we could put something in first name not this year. Almost 90% new students we deal with have also put their info. in SIN and study permit as you have shown by putting full name in family name and leaving rest blank, I don't know if they don't understand this question when applying for student visa.
Try Efile with putting info. like this:
first name: Leave Blank
middle name: Leave Blank
family name: Parbh Rajput (Put it exactly on SIN, if space between Prabh and Rajput then put space, if no space then don't put space)
Hope this helps.
