mutation CreateProductionItem($request: CreateProductionItemCommandRequestInput!) {
  CreateProductionItem(request: $request) {
    id
  }
}

{
  "request": {
    "input": {
      "itemId": "id",
      "isCustomized": true,
      "billsOfMaterials": [
        {
          "name": "string",
          "operations": [
            {
              "operationId": "id",
              "items": [
                {
                  "itemId": "id",
                  "quantity": "value"
                }
              ]
            }
          ]
        }
      ],
      "lotSizes": [
        {
          "lotSize": 1
        }
      ]
    }
  }
}

{
  "data": {
    "CreateProductionItem": {
      "id": "id"
    }
  }
}