The ID Maintenance activity is a record-level tool used by analysts to manage specific identifiers for individual records. If a patient or provider has an incorrect external ID or is missing one necessary for interface communication, an administrator uses this activity to manually add, edit, or delete an Identity ID for that specific record. Defining new ID types (Option B) or configuring global mapping tables (Option D) are high-level configuration tasks performed in different administrative activities, not in the individual ID Maintenance tool.