You may have required fields but still may want to default them when using 3rd party integrations with Oracle CX Sales. This article walks you through the steps to default a Fixed Choice List value when creating new records.
Go to sandbox
Create a new sandbox enabling application composer
Use option Create and Enter
Go to application composer from tools
Expand standard objects
Click on the object you want to customize. For example, contact
Go to Fields
Go to custom tab and either create or use an existing fixed choice list
Go to the default value section and pick a value
Save and close and make sure to publish the sandbox