All of the settings that pertain to synchronizing your Sitecore server with your Salesforce account are grouped under an item called a tenant.
You must create a tenant in order to configure a connection to your Salesforce account.
In Sitecore, open Content Editor.
Navigate to sitecore > system > Data Exchange.
Add the following item:
Template Data Exchange Tenant for Salesforce Name mysf
The name you choose for your tenant is used to identify data read from Salesforce. You can change this value later.