You can view all your cancelled trips in the following way:
1. Log into eTools with your UNICEF email and password
2. Click on the Menu icon in the top left corner of the screen to open menu
3. Select Trip Management

5. Your List of Trips will open

6. Go to Show Cancelled at the top of the page
7. Move the toggle button from the left to the right to show cancelled trips (the button will turn blue)