Are “Reference identifier” and ”Type of identifier” related to a separate/ additional database ID and does it relate to Part B?

The reference identifier in the researchers table in part A of the proposal corresponds to a unique code that a researcher can use to easily identify him/ herself and his/ her work. There is a breakdown menu where the researcher can select the preferred type of identifier (ORCID ID (commonly used to refer to all publications of an author…), Researcher ID, others).