In commemoration of Nintendo’s 135ᵗʰ anniversary, September 20 to 30 is NIWA Cross-Wiki Week. Click here for event details and the possibility to win a $20/€20 Nintendo eShop gift card. Please remember to follow the manual of style and code of conduct at all times. Check the Bulbagarden home page for up-to-date Pokémon news and discuss it on the forums or in the Bulbagarden Discord server.
Parcel
From Bulbapedia, the community-driven Pokémon encyclopedia.
Diamond, Pearl, Platinum, Brilliant Diamond, and Shining Pearl
When brought to the player's rival in Jubilife City's Trainers' School, the Parcel will be opened, revealing that it contains two Town Maps. The player and their rival take one each.
A parcel to be delivered to Professor Oak from Viridian City's Poké Mart.* A parcel entrusted into your care. You're supposed to deliver it to your childhood friend who left Twinleaf Town.*