I got one waiver course which is MATH 1ZZ5
I have credit transfer for MATH 1Z04 and MATH 1Z04 is a prerequisite of MATH 1ZZ5 .
So without registering MATH 1Z04, I could register for MATH 1ZZ5 so MATH 1ZZ5 is a waiver, Thats it
In SOLAR, there is a section called " Unused Course Permissions " In this section, if you have waivers then you can use them