Email domain validation rules for organization ownership and cross-organization conflict checks

Domain

DomainAlreadyUsedByDifferentOrganization

Definition	Severity	API	Sample	Mode
Validate that all domain parts do not exactly match an existing address under a different organization.

Example Validation Report

{
  "code": "VALIDATION__DomainAlreadyUsedByDifferentOrganization",
  "severity": "VIOLATION",
  "message": "Domain derived from '{{value}}' already used by different organization",
  "context": {
    "value": "business.com"
  },
  "details": {
    "createdDate": "2026-02-10T11:36:02.00Z",
    "submitted": [
      {
        "field": "$.emailIdDetails.address",
        "value": "business.com"
      }
    ],
    "compared": [],
    "expected": []
  }
}