v1

latestOpenAPI 3.0.02026-07-26224386470.0 KB

EndUsers

Get duplicate end users for an end user

Find duplicate end users for the given end user by matching on EIN (federal_tax_id) or normalized legal business name. Only returns duplicates within the same user (lender). Matching strategy: (1) Priority - Match by EIN when available (fast indexed query), (2) Fallback - Match by normalized company_legal_business_name when EIN is missing. Requires the count_duplicate_end_users feature flag to be enabled for the user.

get/api/end_users/{end_user_heron_id}/duplicate_end_users

Path parameters

end_user_heron_idstring required

The Heron ID of the end user to check for duplicates

Response

List of duplicate end users found

Example response

{
  "duplicates": [
    {
      "created": "2026-07-16T19:53:47.180326",
      "end_user_heron_id": "eus_abc123",
      "name": "Acme Corp"
    }
  ]
}