Invoice price variance report

[sri.financials]

Dear friends,

I have doubt in <b><font color="blue">'invoice price variance report'</font id="blue"></b> in purchasing module.

From the PDFs this report generates the difference between invoice price & order price.

My doubt is when we prepare an invoice we cannot enter price and qty. We only enter total amount. So how can it generates the differene between the invoice & order prices report?

In PO default invoice also we can't enter invoice price. System tract the Order price in distribution line only.

Could clear my doubt?

Thanks

Sri.