If you encounter errors when adding users, you can check the following:
Verify that the user's email address is not already in use. Each Google Workspace user needs a unique email address.
Make sure that the necessary fields in your CSV file are formatted correctly, such as email addresses and phone numbers.
Ensure that you have enough licenses available for the new users. If you've reached your limit, you may need to purchase more licenses before adding new users.
If you still cannot resolve the issue, consult Google Workspace Support for assistance.