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

# Bring in your data

> Get the stock you own, and the customers you already have, into TWICE.

Step 4 of the [launch path](/docs/guides/launch/overview). Getting what you already have — stock and customers — into TWICE. Building the offers customers buy is the [next step](/docs/guides/launch/build-your-catalog).

Do not start until [Set up your business](/docs/guides/launch/set-up-the-foundation) is finished. Imports attach to locations, attributes and tax rates, and an import run against a half-built foundation has to be redone.

## Get your stock in

Where your data comes from decides the work. From **TWICE 1.0**, you export and reshape — the 1.0 model does not map one-to-one onto 2.0 stock items and SKUs, and that mismatch is where migrations go wrong. From a **spreadsheet**, test ten rows before running the whole file. From **nothing**, you register as you go.

<Note>
  A guide for getting your stock into TWICE, covering all three sources, is in progress. Until it lands: [Import inventory from a CSV](/docs/guides/inventory/import-inventory-csv), [Register stock items](/docs/guides/inventory/register-stock-items), [Register from photos](/docs/guides/inventory/register-from-photos), [Import customers](/docs/guides/customers/import-customers). For 1.0 itself, see [support.twicecommerce.com](https://support.twicecommerce.com).
</Note>

**Done when:** your stock is in TWICE and the count matches what you exported.

## Bring your customers across

Customer records rarely migrate automatically. If you have a list worth keeping — order history, contact details, marketing consent — export it from your old system and import the profiles before you launch, so a returning customer is recognised rather than re-created.

Check what consent you actually hold before importing it. Consent does not transfer just because the email address does.

<Note>
  Until a dedicated guide lands: [Import customers](/docs/guides/customers/import-customers) and [Handle a data request](/docs/guides/customers/handle-a-data-request).
</Note>

**Done when:** your customer list is in, or you have decided deliberately not to bring one.

## Related articles

<CardGroup cols={2} className="doc-rows-condensed">
  <Card title="Launch path" href="/docs/guides/launch/overview">
    The whole path, in order.
  </Card>

  <Card title="Set up your business" href="/docs/guides/launch/set-up-the-foundation">
    The previous step, which this one depends on.
  </Card>

  <Card title="Build your catalog" href="/docs/guides/launch/build-your-catalog">
    The next step: turning stock into things a customer can buy.
  </Card>

  <Card title="Inventory guides" href="/docs/guides/inventory/overview">
    Every inventory task, in full reference detail.
  </Card>

  <Card title="Catalog guides" href="/docs/guides/catalog/overview">
    Every catalog task, in full reference detail.
  </Card>
</CardGroup>