Overview
In SunSystems, a business unit represents an operating entity. You may need just one business unit if you are accounting for a single operating company. Alternatively, in a multi-national organization, you may need several business units, one for each separate legal company or operating unit. One or more business units can be maintained within a single physical database.
The most important business unit operational choices determine how the multi-currency facilities are to be used, if at all. Four different values can be entered on transactions and maintained for each account. The rules that govern the use of these values are defined for a business unit. These rules include:

SunSystems Financials and Order Fulfillment provide true dual base currency processing. This powerful functionality enables you to buy, sell and stock goods in any currency, account in three parallel currencies, and report back to overseas parent companies in the currency of your choice.
The dual base currency processing enables organizations to fully comply with both GAAP and Euro accounting and reporting requirements.
Different values can be held against every transaction throughout the SunSystems suite:

base currency value transaction currency valuesecond base or reporting currency value forth currency fifth currency memo or statistical value.

The currency conversion is carried out when the transactions enter the system. Only one currency value needs to be entered, the remaining two currency values can be calculated using period or daily spot currency conversion rates.
You can maintain any number of different conversion rates for a currency and apply these to different accounting periods, dates and ranges of accounts. You can also maintain up to five additional reporting period rates for each currency.
The exact input and conversion requirements are determined by posting rules you establish for each business unit.
Currency gains/losses can be recognized and posted automatically. You can specify the accounts to which realized gains, realized losses, unrealized gains and unrealized losses are posted. Revaluations can be performed with gains/losses being posted to the appropriate accounts. You can specify that only gains, only losses, both separately, or net gains and losses are posted on revaluation. Revaluation procedures may also be run for reporting purposes only.