Once deleted, you cannot:
As BlackBerry Limited has largely exited the consumer handheld business and discontinued core services (like the legacy BlackBerry Infrastructure), the process for deleting a BlackBerry ID has changed. Before proceeding, please understand that this action is irreversible.
Understanding this architecture is vital to understanding the gravity of the deletion process. Unlike modern cloud accounts (Google or Apple ID), which are designed for cross-platform portability, the BlackBerry ID was inextricably linked to specific hardware identifiers and a closed operating system.