Copy number range for FI from previous period to current period

You will need to every year to copy the number range for FI from previous period to current period using tcode :OBH2 so that you will not getting any error while doing posting.

Create GL account

Go to tcode: FS00 if you want to create new GL account and assign it to a company code.

How I can control exchange rate?

If you want to change the exchange rate in SAP system, you need to go to tcode: OB08. Below screen is the sample print screen of the tcode. Before you proceed on the changing of exchange rate, kindly consult your finance department or FI consultant first.