New employee with no New Starter Declaration or P45

Our payroll software is auto populating statement C if no NO Declaration or P45 are present at the point of when the payroll is committed - Is that ok? It seems fraudulent to me but they insist it is correct.

Hi,
You would need to download a copy of the starter checklist and fill this out if you are using 3rd party software:
Starter checklist for PAYE
Thank you.

The RTI only accepts A,B or C. If you dont tick anything it should default to C, and you should then put the employee on 0T if they have not ticked a box on the form. Some software will put in a box D, but this is just for the 'user experience' and still reports C to HMRC - it cannot be left blank or it will fail the whole RTI submission

Thanks, much appreciated.