> For the complete documentation index, see [llms.txt](https://docs.digitalriver.com/salesforce-lightning/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.digitalriver.com/salesforce-lightning/salesforce-lightning-b2b-commerce-app-1.2.1/appendix/multi-currency-support.md).

# Multi-currency support

The Salesforce Lightning app requires currency ISO codes to be part of the checkout process.

To determine currency ISO codes:

* If multi-currency is **enabled**, the currency ISO code is pulled from the **cart**.
* If multi-currency is **not enabled**, the currency ISO code is pulled from the **user object**.