> For the complete documentation index, see [llms.txt](https://hd.gobiz.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hd.gobiz.vn/he-thong-quan-ly-quy-ke-toan/b4.-tin-nhan-va-cu-phap-chuyen-khoan.md).

# B4. Tin nhắn và Cú pháp chuyển khoản