> ## Documentation Index
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# Specifying the SOAP Address

By default, the SOAP address points to Vindicia’s production servers. Before going live with Subscribe, test your integration code in a Vindicia sandbox server. If your language-specific implementation of a SOAP client does not override the SOAP address specified by the WSDL file, you can download the WSDL files from Vindicia, save them locally, and update the SOAP address to reflect the sandbox and Subscribe SOAP API version you will use.

For example, if you are working with Subscribe SOAP API version 4.2 and want to call in to Subscribe on Vindicia’s Staging sandbox, update the `service` attribute in your local WSDL file as follows:

```

<service name="Transaction">
   <port binding="tns:TransactionBinding" name="TransactionPort">
   <soap:address
location="https://soap.staging.us-west.vindicia.com/v4.2/soap.pl" />
   </port>
</service>
```

**Parent topic:**[Working with Subscribe WSDL Files](../topics/Working_with_Subscribe_W)


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