If a course is an Antirequisite for another if I transfer programs will they count that as a credit for the Antirequisite course? Example under engineering math 1za3 it says math 1A03 is an Antirequisite. So I completed math 1A03 will i have to do math 1za3?

Nope. Actually, anti reqs generally have the same content but are geared towards a particular group of students. Specific to your example, the math courses are the same with the same tests, exams, etc. but the 1ZA3 is compromised of eng students, and the 1A03 has everyone else

That's not actually true.

In most cases for anti-reqs, a significant amount of course material overlaps, but they're not identical, and they certainly don't have identical tests. There might be the odd one or two cases where they do (if the same prof teaches both, for example, then I could see that happening), but in most cases, anti-reqs are either old course codes from older curricula, or courses in which there is substantial overlap but not identical.

For example, chem 1E03 and 1A03 are antireqs, and most of the material is identical, but it's covered in a different order and the tests are similar but not exactly the same. 1E03 has some extra material covered though, that is not done in 1A03. And the overlap in the test questions for these courses is because the instructional team is the same for both.

If you want to transfer, you should talk to an academic advisor to see what exactly transfers.

Antireq: This is a course which cannot be taken for credit before, after, or at the same time as the course with which it is listed.

What will happen? Idk ask your advisor

Just so you know OP, Math 1A03 and Math 1ZA3 are completely identical (I think 2012 was the first year where they were COMPLETELY identical, but I could be wrong). We wrote the same tests and everything (they always said math 1A03/1ZA3). I'm pretty sure that although our chems are antireqs, they weren't completely identical though.