I’m a time keeper and I know most of ARAMCO policies. You are allowed to take the exam days as P Time (no matter the location). If you’re pre-approval letter is singed form your department and goes to the career and development and approved, you can refuse to sign L days during your exam days. It is not your supervisor choice either to give it to you P or L. it is a policy you can find in IT Manual.
Good Luck,