What should be done if you receive an error message saying, "This person belongs to another account" while inviting someone?

When you encounter the error message stating, "This person belongs to another account," it indicates that the email address you are trying to use for the invitation is already associated with an existing Smartsheet account. To resolve this issue, providing a different email address creates a new invitation link directly associated with that alternate email, thereby circumventing the conflict with the existing account.

In contexts where collaboration is needed, using a unique email address ensures that the new user can be properly onboarded without any conflicts with existing accounts. It's essential for effective account management and ensuring that all users can have the appropriate access they need without barriers imposed by pre-existing accounts.