The following error appears while trying to add a user to a new organization:
403 User already exists in another account.
You can create a second Fivetran account using an alias. For example, if the current user is
firstname.lastname@example.org; a workable alias would be
You can also use
email+customerName@domain.com as a unique email alias.
Note: Some email clients do not support aliases.
As of April 21, 2021, Fivetran does not allow the same email address to be used across multiple accounts.