This section describes how to edit the DSN configuration and then authenticate and connect to Salesforce Marketing Cloud APIs.

DSN Configuration

You can use the Microsoft ODBC Data Source Administrator to edit the DSN configuration. Note that the installation process creates a both a user DSN and a system DSN, as described in Installing the Connector.

Note: The connector stores connection information in the Windows registry. To ensure that the connector can write to the registry, either run Power BI as an administrator or use a User DSN for your connection instead of a System DSN.

User DSN

Complete the following steps to edit the DSN configuration:

1. Select Start > Search, and enter ODBC Data Sources in the Search box.
2. Choose the version of the ODBC Administrator that corresponds to the bitness of your Power BI Desktop installation (32-bit or 64-bit).
3. Select the system data source and click Configure.
4. Edit the information on the Connection tab and click OK.

System DSN

Configure the system DSN the same way as the user DSN, except you will need to switch to the System DSN tab before performing Step 3.

If you're using Power BI's On-Premises Data Gateway with Standard mode, you must use the system DSN.

You must also specify a valid location for OAuthSettingsLocation (a path where OAuth credentials are locally stored to avoid repeated OAuth prompts).

This is because the Standard mode runs on service mode and can only access permitted locations, such as C:\Windows\ServiceProfiles\PBIEgwService\AppData\Local\Microsoft\On-premises data gateway.

Connecting to Salesforce Marketing Cloud

For both REST and SOAP APIs, you have the option to refine data access using the following properties:

• Instance: The instance of the Salesforce Marketing Cloud API used. The default Instance is s7 of the Web Services API; however, you can use this property to specify a different instance.
• Subdomain: If the instance is greater than s10, you must also specify the subdomain.

REST API

To connect, set Schema to REST.

The Salesforce Marketing Cloud REST API uses the OAuth authentication standard. To authenticate using OAuth, you must create a custom OAuth application to obtain values for the OAuthClientId and OAuthClientSecret connection properties. See Creating a Custom OAuth App for more information.

SOAP API

To connect, set Schema to SOAP.

The Salesforce Marketing Cloud SOAP API can connect using OAuth, but also supports a legacy use of login credentials.

Note: Data extension objects in Salesforce Marketing Cloud are only accessible through the SOAP API.

Authenticating to Salesforce Marketing Cloud

User Accounts (OAuth)

Set the AuthScheme to OAUTH. Also, in all OAuth flows, set AccountId to the specific MID of the target business unit. NOTE: This is not available for legacy packages. The following OAuth sections assume that you have set both these connection properties.

Desktop Apps

Follow the steps below to authenticate with the credentials for a custom OAuth application. See Creating a Custom OAuth App for information about custom OAuth applications. Get an OAuth Access Token

After setting the following, you are ready to connect:

• OAuthClientId: The Client Id in your application settings.
• OAuthClientSecret: The Client Secret in your application settings.
• CallbackURL: The Redirect URL in your application settings.

When you connect the connector opens the OAuth endpoint in your default browser. Log in and grant permissions to the application. To connect to data, set the OAuthAccessToken connection property to the access token returned by the stored procedure. When the access token expires after ExpiresIn seconds, call GetOAuthAccessToken again to obtain a new access token.

Headless Machines

To configure the driver to use OAuth with a user account on a headless machine, you need to authenticate on another device that has an internet browser.

1. Choose one of two options:
   • Option 1: Obtain the OAuthVerifier value as described in "Obtain and Exchange a Verifier Code" below.
   • Option 2: Install the connector on a machine with an Internet browser and transfer the OAuth authentication values after you authenticate through the usual browser-based flow, as described in "Transfer OAuth Settings" below.
2. Then configure the connector to automatically refresh the access token on the headless machine.

Option 1: Obtain and Exchange a Verifier Code

To obtain a verifier code, you must authenticate at the OAuth authorization URL.

Follow the steps below to authenticate from the machine with an Internet browser and obtain the OAuthVerifier connection property.

1. Choose one of these options:
   • If you are using the Embedded OAuth Application click Salesforce Marketing Cloud OAuth endpoint to open the endpoint in your browser.
   • If you are using a custom OAuth application, create the Authorization URL by setting the following properties:
     • InitiateOAuth: Set to OFF.
     • OAuthClientId: Set to the client Id assigned when you registered your application.
     • OAuthClientSecret: Set to the client secret assigned when you registered your application.
     Then call the rpgrestsp-getoauthauthorizationurl stored procedure with the appropriate CallbackURL. Open the URL returned by the stored procedure in a browser.
2. Log in and grant permissions to the connector. You are then redirected to the callback URL, which contains the verifier code.
3. Save the value of the verifier code. Later you will set this in the OAuthVerifier connection property.

Next, you need to exchange the OAuth verifier code for OAuth refresh and access tokens. Set the following properties:

On the headless machine, set the following connection properties to obtain the OAuth authentication values:

• InitiateOAuth: REFRESH.
• OAuthVerifier: The verifier code.
• OAuthClientId: (custom applications only) The Client Id in your custom OAuth application settings.
• OAuthClientSecret: (custom applications only) The Client Secret in the custom OAuth application settings.
• OAuthSettingsLocation: The location of the settings file where OAuth values are saved when you set InitiateOAuth to GETANDREFRESH or REFRESH. Alternatively, you can hold this location in memory by specifying a value starting with 'memory://'. When this connection property is set, the data persists across connections.

After the OAuth settings file is generated, you need to re-set the following properties to connect:

• InitiateOAuth: REFRESH.
• OAuthClientId: (custom applications only) The client Id assigned when you registered your application.
• OAuthClientSecret: (custom applications only) The client secret assigned when you registered your application.
• OAuthSettingsLocation: The location containing the encrypted OAuth authentication values. Make sure this location gives read and write permissions to the connector to enable the automatic refreshing of the access token.

Option 2: Transfer OAuth Settings

Prior to connecting on a headless machine, you need to create and install a connection with the driver on a device that supports an Internet browser. Set the connection properties as described in "Desktop Applications" above.

After completing the instructions in "Desktop Applications", the resulting authentication values are encrypted and written to the location specified by OAuthSettingsLocation. The default filename is OAuthSettings.txt.

Once you have successfully tested the connection, copy the OAuth settings file to your headless machine.

On the headless machine, set the following connection properties:

• OAuthClientId: (custom applications only) The client Id assigned when you registered your application.
• OAuthClientSecret: (custom applications only) The client secret assigned when you registered your application.
• OAuthSettingsLocation: The location of your OAuth settings file. Make sure this location gives read and write permissions to the connector to enable the automatic refreshing of the access token.

Server-to-Server (OAuthClient)

When creating an application in Salesforce Marketing Cloud, you can select server-to-server authentication. In this case, the application's permissions are configured directly in the Salesforce Marketing Cloud UI. As such, there is no user context and hence no browser-based login or permission grants. For this scheme, you must create your own credentials.

Specify the following properties to enable server-to-server OAuth authentication for your application:

• AuthScheme: OAuthClient.
• InitiateOAuth: GETANDREFRESH.
• OAuthClientId: The client Id.
• OAuthClientSecret: The client secret.
• Subdomain: Specify the Salesforce Marketing Cloud API subdomain.

User/Password Accounts (Basic)

The Salesforce Marketing Cloud SOAP API can connect using either your login credentials or OAuth authentication. Note that this authentication scheme is not available for REST API-based applications.

To connect to data using login credentials authentication, set the following:

• AuthScheme: Basic.
• User: The Salesforce Marketing Cloud user account.
• Password: The password used to authenticate the user.
• UseLegacyAuthentication: True.