> For the complete documentation index, see [llms.txt](https://docs.pos.pages.fm/pos/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pos.pages.fm/pos/english/advanced-features/mua-sam-tren-messenger/1-so-cau-hoi-thuong-gap.md).

# 1 số câu hỏi thường gặp