State tax filing

My state return (California) was rejected, though my federal was accepted. The error code I was given was:

 

F540/NR/2EZ-320 - Duplicate SSN: The Primary Taxpayer's social security number cannot match a previously accepted return unless the (AmendedReturn) checkbox is checked.

 

I have not filed previously for 2019, so it should not be a duplicate SSN. This is not an amended return, so I do not want to check that box; there is nothing I can modify. I tried resubmitting and got the same error.