# 

Testing directly over the Swift Network is complex and can be slow. Instead, you should test your integration by mocking a Swift message with the Wise Platform sandbox.

### Mock Swift payments with sandbox

Using sandbox, you can test the initial tech build for webhook subscriptions, balance statements, and sweeping funds.

To test your listener service, you should use the following simulation endpoint to send a mock Swift payment to sandbox.
If the request is successful the transfer is logged in our back office, which triggers a [swift-in#credit](/guides/developer/webhooks/event-types#swift-in-credit) event and results in a balance update.

Please check with your dedicated Implementation Manager if you don't receive the event.

Schema
currencyCode
Currency received by Wise.
*Mandatory*
*Length:* Exactly 3 Characters
*Format:* 3-letter ISO currency code

amount
Amount received by Wise.
*Mandatory*

beneficiaryName
Name of the ultimate beneficiary.
*Optional*

beneficiaryAccount
Account number of the ultimate beneficiary.
*Optional*

beneficiaryAddress
Address of the ultimate beneficiary.
*Optional*

senderName
Name of the sender.
*Optional*

senderBic
BIC of the sender's bank.
*Optional*

senderAccount
Account number of the sender.
*Optional*

senderAddress
Address of the sender.
*Optional*

senderAddress
Custom payment reference.
*Optional*

Example swift-in simulation request

```shell
curl -X POST https://api.sandbox.transferwise.tech/v1/simulation/profiles/{profileId}/swift-in \
     -H 'Authorization: Bearer <your api token>' \
     -H 'Content-Type: application/json' \
     -d '{
          "currencyCode": "EUR",
          "amount": 100,
          "beneficiaryName": "John Doe",
          "beneficiaryAccount": "DE89370400440532013000",
          "beneficiaryAddress": "1234 Elm St, Springfield, IL 62704",
          "senderName": "Jane Doe",
          "senderBic": "DEUTDEDBFRA",
          "senderAccount": "DE89370400440532013000",
          "senderAddress": "5678 Oak St, Springfield, IL 62704",
          "paymentReference": "Test123"
        }'
```

## Going Live 

Once configuration and production testing is completed, you'll need to update SSI to point your production BIC to our BIC.

It's also recommended you notify other members of the Swift network that the SSI has been updated. Otherwise it might take a while before they start routing payments correctly.
This can be done through an MT670 message sent directly to Swift. Wise will need to send this message on your behalf.