Overview:
A user defines a custom field in Data Change Request (DCR) with a default value. The default value is not displayed in a new DCR page.
Root Cause:
The New DCR page is implemented by a Visual Force page. The Visual Force page does not support displaying the default value.
Solution:
As a workaround, please use Help Text at field level for the disclaimer. Refer to the related documentation for more information.
Related Documentation:
Salesforce Help: Define Field-Level Help