one of our Customer has in the Recruiting Process some fields for the New Employee Regarding Talent Profile.
Is it possible to map this information in the Onboarding Process so they appear after the hiring in the Talent Profile for the new Employee?
Yes, you can sync the Candidate Profile to the Employee Profile. This isn't actually an Onboarding function. Check out the instructions for this mapping in the help guide. Candidate Profile Element: sm-mapping | SAP Help Portal