Enter the following query in the scrip

[#1]

It does not allow me to enter the following expression in the scrip, send me an error, saying, field not found.

  if(sum(cantidad * costo), sum(Venta_Presupuesto) = 0,sum(Venta_Presupuesto)) as Venta_Presupuesto

Help!!!!!!

[#2]

correct letters are capitalized and also add a group, but even so I send error message