> ## 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.

# Switch new orders to 2.0

> Set the date, run the readiness check, and close every 1.0 intake channel at once.

Step 8 of [migrating from TWICE 1.0](/docs/guides/migration/overview). This is the switch itself. It is a short day if the previous seven steps are done, and a long one if they are not.

## Set the date

Pick a date in your quietest trading period. Set the staff training date and the readiness check date **before** it, and move all three together if the date moves — a switch date that slips while the training date does not means staff trained on something they then wait a month to use.

## Readiness check

One named person signs off, on a date, against every line below. Run it about two weeks out, not the day before: its entire value is that there is still time to fix what it finds. No-go is a normal and cheap outcome at that distance.

**Signed off by \_\_\_\_\_\_\_\_\_\_\_\_ on \_\_\_\_\_\_\_\_\_\_\_\_**

* Every case in [step 5](/docs/guides/migration/test-your-processes) passed, unaided.
* Staff are trained.
* Settings are configured.
* Payments are connected, and a live-mode transaction is proven.
* Catalog and inventory reconcile against 1.0.
* The rollback condition is written down, and everyone knows who decides.

## On the switch date

<Warning>
  **Close every intake channel at once.** A channel left open in 1.0 allocates stock that 2.0 has potentially already sold. Confirm each channel is closed before you open 2.0 — not in parallel with it.
</Warning>

1. **Close 1.0 to new orders** — every channel at once: website, booking widget, phone workflow, and the counter. After this you only finalise existing orders in 1.0. All new orders are handled in 2.0.
2. **Open 2.0** — store address live, links updated, payments in live mode.
3. **Place a real transaction yourself** and check the order, the payment, and the confirmation email. Do not wait for a customer to find the first problem.
4. **Tell every person who can take an order** that new orders go into 2.0 only.

## Done when

* Every 1.0 intake channel is confirmed closed.
* 2.0 is open, on its live address, with payments in live mode.
* You have placed a real transaction and verified the order, the payment and the confirmation.
* Everyone who can take an order knows where orders go now.

## Related articles

<CardGroup cols={2} className="doc-rows-condensed">
  <Card title="Test your processes" href="/docs/guides/migration/test-your-processes">
    The cases the readiness check confirms.
  </Card>

  <Card title="Where a listing sells" href="/docs/guides/sales-channels/control-where-a-listing-sells">
    Which channels a listing is available in.
  </Card>

  <Card title="Run both systems until 1.0 is finished" href="/docs/guides/migration/run-both-systems-down">
    What happens the day after.
  </Card>
</CardGroup>