> For the complete documentation index, see [llms.txt](https://docs.digitalriver.com/salesforce-b2c-link-cartridge/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-b2c-link-cartridge/2.0/introduction/requirements.md).

# Requirements

## Payout options requirements

Before you can install the Salesforce B2C LINK Cartridge, you'll need to contact Digital River, <salesforce@digitalriver.com> to request credentials, configure the available payment options within Drop-in, and receive your LINK key. Additionally:

* Only SFRA architecture is supported.
* Use of the Digital River cartridge requires credentials and keys from Digital River (contact Digital River customer service).
* The cartridge is designed for the US locale but can work with other locales.

The following Salesforce Commerce Cloud (SFCC) features are not supported:

* Multiple Shipping Addresses

## Firewall requirements

No adjustments to the SFCC Firewall settings are needed.