When submitting a Request, a fileld value showing as empty after the save, despite data being entered.

Release : 17.2

Component : CA SERVICE CATALOG

This is seen when there are two fields in the form with the same _id value. Even if the other one is disabled/hidden by the form logic, all field IDs must be unique, otherwise the contents of the wrong one may be displayed. 

The form designer in current releases will display a red warning if this is the case for your form; these errors need to be corrected for the request to operate correctly.