> For the complete documentation index, see [llms.txt](https://developer.paywall.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.paywall.one/payment-orchestration-integration-document/physical-pos/6.-payment/async.md).

# Async

The flows used when physical POS providers' own <mark style="color:yellow;">applications (such as Pavo, etc.)</mark> are used are referred to as "Async" within the Paywall ecosystem.