You must add new users to Cloud Identity; some already have personal Google accounts. To avoid account conflicts, what should you do?

The correct approach is to invite the user to transfer their existing Google account into the organization. Cloud Identity allows users with existing personal Google accounts (e.g., @gmail.com) to transfer ownership and management of that account to the organization. This process converts the personal account into a managed Cloud Identity account, preserving data like Drive files and YouTube subscriptions, and avoiding the creation of duplicate accounts or data loss. Using an email alias won't resolve the underlying conflict of having two separate accounts with the same primary email address. Telling the user to delete their existing Google account is disruptive and causes data loss. Removing personal email from their existing Google account doesn't address the account ownership conflict.