In which scenario is a mapping file required when migrating Exchange accounts to Google Workspace?

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A mapping file is required when migrating Exchange accounts to Google Workspace in situations where the migration addresses differ from the Google Workspace addresses. This scenario arises because the mapping file acts as a guide to ensure a seamless transition from the old system to the new one. It essentially helps establish a correspondence between the existing email addresses and the new Google Workspace addresses, ensuring that messages, contacts, and other data are correctly routed to the appropriate user accounts.

In this case, if the email addresses in the legacy Exchange system differ from those in Google Workspace, the mapping file is crucial to successfully align the accounts. It helps avoid confusion, ensures data integrity, and minimizes the risk of data loss during the migration process.

The other scenarios do not necessitate a mapping file because if users have identical email addresses, access calendars only, or when migrating users without a legacy email system, there is generally a clear correspondence between user accounts, minimizing the complexity that the mapping file addresses. This makes the necessity of a mapping file redundant in those cases.