Cost of sales and Net Sales on the billing document - document nd local cur

Hi guys,

I am working on preparing a sales summary report to get Cost of sales, net sales and margin.

They want all the above three value in document currency and local currency. The above values are present in VBRP table in document currency. How do i find out which is my local currency and how do i convert the values in document currency to that local currency?

There is one more currency...credit control area currency in the tables? what is this cur

Thanks,

Maulik