Exchange Rates 
Exchange Rates
Use
When you send a foreign customer an invoice denominated not in baht but in a foreign currency, you must still create the tax invoice with the amounts in baht. The Thai Revenue Code requires you to translate the foreign currency amounts using the buying rate that the Bank of Thailand published yesterday.
Activities
Customizing
Maintain the buying rates every day as published by the bank. In the standard system, the exchange rate type for buying rates is G. You can maintain the exchange rates in Customizing for General Settings, by choosing Currencies ® Enter Exchange Rates.
Maintain the copying control for creating billing documents, in Customizing for Sales and Distribution (SD), by choosing Billing ® Billing Documents ® Maintain Copying Control for Billing Documents ® Copying Control: Delivery Document to Billing Document. For each line item category affected, make the following settings:
Master Data
When you
create customer master records for foreign customers, on the Sales tab, set the default exchange rate type to G (buying rate).
Day-to-Day Activities
When you
create a sales order for materials priced in a foreign currency, the sales order shows the price in foreign currency and its equivalent in baht. Make sure that you set the document currency to the foreign currency. The system translates the price into baht using the buying rate valid on the pricing date.When you
create the billing document for the sales order, the price in the foreign currency remains unchanged, but the system recalculates the baht price using the buying rate published the day before the billing date. It does so because of the entry you have made in the Copying Requirements field in the copying control in Customizing.When you then print out a tax invoice from the billing document, the tax invoice displays the baht prices correctly.