Click "PARTICIPANTS" 2. Click "ATTRIBUTES" from the left navigation 3. Click "EXTERNAL IDENTIFIERS" 4. You can view all the existing external identifiers for the research domain. Related ArticlesCreating Custom ReportStep 4: Create a Zap to Integrate Rival with BHNCreating External Identifiers for a research domainAdd external identifier to chat URLManaging Users & Granting Access in a Research Domain