> 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/5.-pair/sync.md).

# Sync

In the physical POS world, the flows used when utilizing <mark style="color:green;">Paywall's</mark> own applications are referred to as 'Sync' within the Paywall ecosystem.