Please see this Turbo Tax help article.
Error code 603: All the available activations for that code has been used.
https://ttlc.intuit.com/community/tax-topics/help/error-code-603-all-the-available-activations-for-t...
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
