Salesforce - Reset your Security Token
Your Salesforce API user security token is only presented once when you create the user. If you don't have that token saved (usually in an email), you may need to reset your token to get a new one for the authentication portion in Cadence.
Note: Resetting your security token will reset that token for any application also using this API user.
Click your Profile in the upper right>Settings
Under "My Personal Information" you should see an option to "Reset My Security Token".
Make sure to save this email should you need to reference this token at a later date.