Certain required fields in the Application form, eventhough marked as required will not be showing any warning against those, if it is left blank.
The Operator would be able to save/move the application to the Next status in the Pipeline without having values in those required fields .
SuccessFactor Bizx - Recruiting
This type of behavior will only happen in Late Stage Applications .
If the fields are defined as required and marked Public=true, which means the candidate will be able to update it .Now the candidate is an Non applicant, the validation will not be happening, if the Operator is trying to update the Application and move him/her to the next status in the pipeline
Only the required fields which are marked as Public=False (Where Candiate do not have the access to edit it) will be validated and the error message will come if the Operator is not filling it.
For an Applicant, the required field marked as Public="true" will also be validated and the application will not be saved without filling those fields.
This is by System design.
Required field validation in Late stage application , KBA , LOD-SF-RCM-JOB , Job Postings & Requisitions , Problem