Often times, you will get an error code if the school district code is incorrect. The Piqua school district code is 5507 as listed on the Summary of School District Income Tax Election Results. A second SD-100 might be added to your return if your home address and the code inputted does not match.
To update your school district code, please continue through the state questions until you get to a page that is titled A few things before we wrap up your state taxes. If you scroll down on this page, you will see School District Taxes. Click on Update and follow the on-screen instructions, and input the correct code.
You should have no further problems after you enter the correct school district code and having only one SD-100 attached to your state return.