I have a form created in the App Studio and trying to submit from our custom app. It seems to be erroring on a lookup field getting the error "Error while converting json value for Id: List: Site". Site is the column in the main list that the form control is linked to.
This same form submits without error from the Nintex App.
The lookup is accessing a 'view' of the lookup list which has never been a problem with the Nintex app.
I also received this error once before on a numeric field. The number was too large.
Anyone else getting this error when submitting a form from with the custom app?