The field "LastnamePrefix" in the worker entity and Initials in the "People" entity are not synchronized to CDS. In some European countries such as the Netherlands or Germany, the LastnamePrefix is needed to get the proper lastname of a worker.

The initials are quite a handy field to expose in both the Talent Odata Worker Entity and in CDS. Certain business logic for example requires initials to be set in email signatures instead of a firstname.