> For the complete documentation index, see [llms.txt](https://docs.lyzi.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lyzi.io/en/faq/cryptomonnaies-wallets-et-exchanges/comment-mon-client-peut-il-echanger-swap-sa-crypto-avant-de-payer.md).

# How can my customer exchange (swap) their crypto before paying?

If your customer holds a crypto that isn't accepted, or not enough of the right crypto, they can exchange it (do a "swap") for an accepted crypto before paying. It's **your customer** who does the exchange, from their phone.

### Where to do the exchange

| Where                                                                         | Condition                                             |
| ----------------------------------------------------------------------------- | ----------------------------------------------------- |
| **On the payment page**, with the **two small arrows at the top of the page** | The customer has connected their wallet               |
| **On** [**pay.lyzi.io/otc**](https://pay.lyzi.io/otc)                         | Same exchange tool, accessible directly               |
| **In their own wallet or exchange**                                           | Depending on the features of their wallet or exchange |

### The procedure with the Lyzi exchange tool

1. Open the **Exchange** screen (two small arrows at the top of the payment page, or pay.lyzi.io/otc).
2. In **From**, choose the crypto to exchange (for example POL).
3. In **To**, choose the desired crypto (for example USDC).
4. In **Send**, choose the amount to exchange.
5. **Confirm** the exchange.
6. Return to the payment and pay with the crypto obtained.

### Points to watch

* After the exchange, the customer pays **on the same network** as the one where they hold the crypto obtained.
* If the exchange takes time and the customer hasn't sent anything yet, you can cancel the transaction and then create a new one when they're ready.

### Questions covered

* "How can my customer convert their crypto?"
* "What are the two arrows at the top of the page?"
* "How do I do a swap on the payment page?"
* "How do I use pay.lyzi.io/otc?"
* "My customer has POL but wants to pay in USDC"
* "My customer doesn't have the right crypto"
* "Convert USDT to USDC"


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