> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fusioncore.us/llms.txt
> Use this file to discover all available pages before exploring further.
# Enabling Multi-currency
> Turn on Salesforce multi-currency so fusionCore can take payments, issue orders, and report in more than one currency.
Multi-currency is a Salesforce org-level setting. When you turn it on, Salesforce adds a standard `CurrencyIsoCode` field to currency-bearing records (Accounts, Contacts, Orders, and more) and maintains conversion rates between your org's **corporate currency** and every other currency you activate.
The corporate currency is the single base currency Salesforce converts everything back to for consolidated reporting. fusionCore reads `CurrencyIsoCode` when it creates orders, processes payments, and sends amounts to payment gateways, so this setting is the foundation for everything else in this section.
Activating multiple currencies **cannot be undone**. Salesforce does not let you turn it off once it is enabled. Confirm you have agreement from all stakeholders before you proceed.
## Before You Start
* You need a Salesforce user with permission to edit **Company Information** (typically a System Administrator).
* Decide which currency will be your corporate currency. It does not have to be USD.
* Have the list of currencies you sell in ready, so you can activate and rate each one.
## Enable Multiple Currencies
At the top right of Salesforce, click the gear icon and select **Setup**.
In the **Quick Find** bar, type `Company Information`, then click **Company Information**.
On the **Company Information** detail page, click **Edit**.
Check the **Activate Multiple Currencies** checkbox, then click **Save**.
Back on the **Company Information** detail page, click **Currency Setup**.
In the **Active Currencies** section, use the buttons and links to:
* **New** — activate a currency you sell in (for example, `USD`, `EUR`, or `GBP`).
* **Edit Rates** — set each currency's conversion rate against the corporate currency.
* **Change Corporate** — choose which active currency is the corporate currency.
* **Deactivate** — retire a currency you no longer offer.
Activate every currency you intend to transact in, and set a conversion rate for each one.
A corporate currency must always be selected. It does not have to be USD, but only one corporate currency can be set at a time. Your choice affects how every exchange rate is expressed, because all rates are relative to the corporate currency.
## What to Do Next
Enabling multi-currency is only the first step. To finish setting up, also:
* [Define Business Unit currency](/end-user-guides/accounting/multi-currency/defining-business-unit-currency) so each business unit transacts in the right currency.
* [Set Supported Currencies on Payment Types](/end-user-guides/accounting/multi-currency/supported-currencies-on-payment-type) to scope payment methods to specific currencies.
* [Create multi-currency orders from an Account or Contact](/end-user-guides/accounting/multi-currency/creating-multi-currency-orders-from-account-contact).
* [Update the standard price validation rule](/end-user-guides/accounting/multi-currency/updating-standard-price-validation-rule) if you need per-currency standard prices.
## Limitations and Common Pitfalls
* **Activation is irreversible.** Once multiple currencies are active, Salesforce provides no way to turn the setting off.
* **Activate and rate currencies before you transact.** fusionCore raises a "currency not supported" error when it tries to convert to or from a currency that has no active, rated currency in Setup. A currency that exists only as a label, with no conversion rate, will fail.
* **Conversions use Salesforce's stored rates.** fusionCore reads the current conversion rate you set in **Currency Setup** and rounds converted amounts to two decimal places. If you use Salesforce Advanced Currency Management (dated exchange rates), verify the converted figures, because the current rate is used rather than a date-specific rate.