I requested to book off a week early next year last month. It got approved by the head of my team, and has been put on our formal annual leave system and on the department's calendars.
My manager has now requested the same time off, and says that nobody is off on those days even though I am, I'm not sure why they can't see I'm off either it's not showing properly in the system or he hasn't checked properly. We're not allowed to have time off at the same time due to capacity.
I know I need to message my manager but I'm not sure what to say without sounding rude. I have booked a holiday for these dates specifically, gave a lot of notice and got the time approved.