> For the complete documentation index, see [llms.txt](https://local.docs.ssaudit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://local.docs.ssaudit.com/english-1/e-invoice/9.2-register-account-connection.md).

# 9.2 Register Account Connection

<figure><img src="https://632035940-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MS6wMckMyiqOiAIvWnY-1703796690%2Fuploads%2Fgit-blob-2b1d54c3b45f574ea8952ab0e8a4cc1c40ae066a%2Feinvoice-account-01.png?alt=media" alt=""><figcaption></figcaption></figure>

After the e-invoice supplier, for example Viettel, creates an account for the client, enter the connection account information on this screen.

1. Enter **Account User**.
2. Enter **Password**. The default initial password format is **\[TIN] + 111111a\@A**.
3. Click **Save** to store the connection information.

> **Example:** If the company's Tax Identification Number (TIN) is 0312345678, the default initial password is **0312345678111111a\@A**.

> **Note:** TIN is the company's Vietnamese tax identification number. If the password is changed on the provider portal, update the password in SmartBooks before issuing invoices.