In the context of Bachelor Degree Programme, IGNOU has done the breakdown of the courses in the following manner-

Foundation Courses (24 Credits)

Elective Courses (56 Credits or 64 Credits)

Application Oriented Courses (16 or 8 Credits)

You need to complete 96 credits in three year means 32 credits in each year to be awarded this degree.

Each courses in BDP programme has been assigned credits, either 8 or 4.

Foundation Course is compulsory in first year, as I said you need to complete 24 credits in total,

for first year you'll choose 16 credits in foundation course, along with 16 credits from elective group

in second year, you'll choose 8 credits of foundation course with 24 credits from elective group

in the final year, the application oriented courses can be choosen for minimum 8 credits and maximum 16 credits, depending on this you'll choose your electives to be of 24 or 16 credits.