Backup field

The backup field (バックアップフィールド) is an object created by Koushiro "Izzy" Izumi in Digimon Adventure tri.. Its purpose is to create a backup of the Partner Digimon's data and filter unusual data from them during the reboot.

Digimon Adventure tri.
Hearing of the possibility of a reboot and the Digimon would lose all their memories in such an event, Izzy creates the backup field as a counterplan to save the Digimon's memories. When the countdown for the reboot initiates during the battle against, Izzy makes the backup field appear inside the Digital Dimension and instructs and  to put all other Digimon inside it. Eventually, is left as the last Digimon to attack their comrades and Izzy orders him to enter the cube. Tentomon refuses to be the only one to be saved and digivolves to ina an attempt to save everyone. However, he takes too long and fails to save anyone from the reboot.