I understand that one have to clear E20-050 before he/she is eligible to sit for E20-522

Say I have 3-4 years of experience working on Clariions. Is is mandatory to get registered in EMC trainging courses to sit in exam or get EMC certified for following certifications?

E20-050 - Clariion Associate Level Engineer

and

E20-522 - Clariion Professional Engineer

Thanks