An external affiliation identifier is a unique code or number assigned to an individual or organization that is used to identify their relationship with an external entity. This identifier is typically used in academic or professional settings to track affiliations with institutions, companies, or other organizations. It serves as a way to easily and accurately identify and verify an individual’s or organization’s external affiliations, such as employment, membership, or partnership. This allows for efficient record-keeping and ensures the accuracy and credibility of an individual’s or organization’s affiliations.