> 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/2.1.1-2/appendix.md).

# Appendix

- [Fulfillment and cancellation flow](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/fulfillment-and-cancellation-flow.md): This page contains additional helpful information about Fulfillments.
- [Issuing refunds](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/issuing-refunds.md): Learn how to issue refunds through the Salesforce B2B Commerce App.
- [Managing regulatory fees](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/managing-regulatory-fees.md): Learn how to manage regulatory fees.
- [Managing subscriptions](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/managing-subscriptions.md): Understand how the Salesforce B2B Commerce App supports the processing of recurring installment payments.
- [Salesforce B2B Commerce App logs](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/salesforce-b2b-commerce-app-logs.md): Learn how to work with the Salesforce B2B Commerce App logs.
- [Uploading tax certificates (US TEMS)](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/uploading-tax-certificates-us-tems.md): Understand how customers upload tax certificates.
- [Global tax identifiers](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/global-tax-identifiers.md): Understand how tax identifiers are used.
- [VAT invoices](https://docs.digitalriver.com/salesforce-b2b/2.1.1-2/appendix/vat-invoices.md): Understand how VAT invoices are viewed and downloaded.