Dynamics Ax 2012 - Invoiced Sales Order

Hi Dynamisc Ax Community,

I would like to ask about "What is the correct way to fix Sales order which has already been invoiced"?

I have a case like, sales order has been invoiced. And at that moment users realise that the sales price was wrong. And what is the correct approached to correct the invoiced sales order? Because it has affected several account (Sales revenue, Inventory, etc)

Thanks,

Best Regards

Qiwei