Trying to change pivot table source with name range and keep getting "reference isn't valid" message?

[olimits7]

Hi,

I created a name range called "contract_data_source" and when I try to change my pivot table source to this, I keep on receiving the "Reference isn't valid" message for some reason even though it's the same dataset it's currently linked to...why would this not be working?

Thank you.

 

[olimits7]

Does anyone know why this isn't working with defined name ranges? Ty.