mutation DuplicateItems($request: DuplicateItemsCommandRequestInput!) {
  DuplicateItems(request: $request) {
    createdItems
  }
}

{
  "request": {
    "duplicateItemId": "id",
    "duplicatesToCreate": [
      {
        "sku": "string",
        "name": "string"
      }
    ],
    "executeItemCreatedWorkflowOnCreation": true,
    "itemDuplicationOptions": {}
  }
}

{
  "data": {
    "DuplicateItems": {
      "createdItems": [
        "id"
      ]
    }
  }
}