on 05/03/2016, PeasonVue and VMware announced a new process of Booking or Managing your VMware Certification exams.
As part of this, now you don’t have to request Authorization for Exam and then separately launch PearsonVue portal to book the exam. There’s no need to even maintain two accounts across these two websites.
All you got to do is, GO in your http://mylearn.vmware.com account. And then simply click on ‘Getting Started’ Tab. That’s where under Exam Authorization section, you will find a link to launch ‘Pearson Vue: Manage Exam’, which is single sign-on with your current mylearn portal account. See following screenshot