Why the exam description and the real exam are different?

I just took a D-PE-OE-23.
I didn't pass the exam.
According to the D-PE-OE-23 Exam Description, Part 1 is ~ 50 questions and Part 2 is ~ 6 Simulations.
However, the real exam was that Part 1 is 41 questions and Part 2 is 9 questions.

Why the description and the real exam are different?