> For the complete documentation index, see [llms.txt](https://docs.pancakeswap.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pancakeswap.finance/portuguese-brazilian/negociacao/crosschain-swaps/swap-scenarios.md).

# Cenários de Swap

Existem 4 cenários para transações Cross-chain.

#### 1️⃣ Apenas Bridge

* Exemplo: **Bridge de ETH na Base para ETH no Arbitrum**
* Apenas tokens suportados (USDC, USDT, WETH, etc) podem ser bridgeados diretamente. Esses tokens variam conforme a blockchain de origem e destino.

#### 2️⃣ Swap → Bridge

* Exemplo: **Swap de BNB na BNB Chain para USDC no Arbitrum**
* Fazer swap de BNB para um token de bridge suportado (ex.: USDC) usando os pools da PancakeSwap na BNB Chain
* Fazer bridge de USDC via Across para o Arbitrum

#### 3️⃣ Bridge → Swap

* Exemplo: **Swap de USDC na BNB Chain para ARB no Arbitrum**
* Fazer bridge de USDC via Across
* Fazer swap de USDC para ARB usando os pools da PancakeSwap no Arbitrum

#### 4️⃣ Swap → Bridge → Swap

* Exemplo: **Swap de BNB na BNB Chain para ARB no Arbitrum**
* Fazer swap de BNB para um token de bridge (maximizando o resultado para o usuário)
* Fazer bridge via Across
* Fazer swap do token bridgeado para ARB no Arbitrum usando os pools da PancakeSwap

***

### ⚠️ Casos de Falha

| Cenário                                      | Resultado                                                                                                                                                                                                         |
| -------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Falha de Swap/Tx na Blockchain de Origem** | O usuário recebe instantaneamente o token original na blockchain de origem                                                                                                                                        |
| **Falha na Tx de Bridge**                    | O Across processa um reembolso em até 90 minutos a 2 horas, e o usuário recebe o ativo bridgeado na blockchain de origem. Já o Relay processa o reembolso em menos de um minuto nesses cenários entre SOL <> EVM. |
| **Falha de Swap na Blockchain de Destino**   | O usuário recebe o ativo bridgeado na blockchain de destino                                                                                                                                                       |


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