> ## Documentation Index
> Fetch the complete documentation index at: https://www.aiaccountant.com/help/llms.txt
> Use this file to discover all available pages before exploring further.

# How syncing to Tally works

> What happens between creating an entry in AI Accountant and the voucher appearing in Tally, and how to read sync status.

Nothing you create or upload in AI Accountant reaches Tally on its own. Entries are held in AI Accountant until you sync, which gives you a checkpoint before anything is written to your books.

## The stages an entry goes through

| Stage                                  | Where it sits                                          | What it means                                                   |
| -------------------------------------- | ------------------------------------------------------ | --------------------------------------------------------------- |
| Uploaded                               | Needs Review, for uploaded bills and bank transactions | Details have been extracted but not confirmed by you.           |
| Created, approved, or Accounting Ready | The module's main list                                 | The entry is complete in AI Accountant. It is not in Tally yet. |
| Synced                                 | The main list, with a cloud icon                       | The voucher exists in your Tally company.                       |

## What sync does

Clicking **Sync** sends every eligible unsynced entry in that module to your connected Tally company, not only the one you are looking at. If three invoices were created since your last sync, all three go across.

When it finishes, the voucher number is filled in, a cloud icon appears next to the row, and the entry's detail page shows the synced status and date.

## Voucher numbering

Voucher numbers come from Tally, not from AI Accountant.

| Your Tally setting  | What happens in AI Accountant                                                              |
| ------------------- | ------------------------------------------------------------------------------------------ |
| Automatic numbering | The Voucher Number field is locked and stays blank until you sync, then Tally fills it in. |
| Manual numbering    | You type the number on the entry, and it is used as is.                                    |

A blank voucher number on a new row is expected. It means the entry has not synced yet, not that something has failed.

## Before you sync

* Tally is open and the connector is running on that computer.
* The masters used on the entry (party, item, ledger, godown) exist in Tally.
* The entry is allocated, and for bills and bank transactions, approved or marked Accounting Ready.

## After you sync

Open the voucher in Tally and compare it with the entry in AI Accountant. The party name, ledger, item, quantity, rate, GST, total, and reference should all match. Nothing needs re-keying in Tally.