Usually you can delete the form 1099G from your return and re-enter the information manually to clear this error.
You can delete the form in the interview topic or if using an online version follow these steps to "delete a form."
- Click "Tax Tools" in the left hand menu
- Click "Tools"
- Click "Delete a Form"
- Find the 1099-G
- "Delete"
- "Confirm Deletion"
If using a desktop version switch to the "Forms View" to delete the form 1099G.