You can't prepare just state. You need to fill out federal first and pay any fees to do state. Then say to mail both and just mail state.
https://ttlc.intuit.com/community/filing-and-paying-taxes/help/can-i-prepare-and-file-just-my-state-...
And you can not efile state unless the Federal was also efiled from the same account and accepted. Read this whole FAQ
https://ttlc.intuit.com/community/e-file/help/can-i-e-file-my-state-return-before-my-federal/00/2554...
