> For the complete documentation index, see [llms.txt](https://docs.digitalriver.com/salesforce-b2b/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-b2b/2.1.0/appendix.md).

# Appendix

Find more information on tax certificates, subscriptions, regulatory fees, refunds, logs, and the fulfillment and cancellation flow.