UNAUTHORIZED_FIELD_OR_TYPE on create_item mutation

I’ve been using the following to create an item on a board:

export const createItem = async (variables: any, shortLivedToken: string) => {
	const monday = mondaySdk();
	monday.setToken(shortLivedToken);
	const query = `
        mutation createItem (
            $board_id: ID!
            $group_id: String!
            $item_name: String!
            $column_values: JSON!
        ){
            create_item (
                board_id: $board_id, 
                group_id: $group_id, 
                item_name: $item_name, 
                column_values: $column_values
            ) {
                id
            }
        }
    `;
	const options = { variables };
	const response = await monday.api(query, options);
	return response;
};

When passing this data in:

	const variables = {
		board_id: 7833822272,
		group_id: "topics",
		item_name: "Project Pivot",
		column_values: JSON.stringify({
			status: "14", // aka `Approved`
			date4: "2024-07-29 11:00:00",
			long_text: "Pivot demo",
			numbers3: 40
		})
	};
	const item = await createItem(variables, shortLivedToken);
	
	console.log(`Created item? "${itemName}":`, item );
	console.log(`variables:`, variables );

It gives me the following errors from the console.log lines:

Created item? "Project Pivot": {
	"errors": [
		{
			"message": "Unauthorized field or type",
			"path": [
				"create_item"
			],
			"extensions": {
				"code": "UNAUTHORIZED_FIELD_OR_TYPE"
			}
		}
	],
	"account_id": 11749326
}

variables: {
	"board_id": 7833822272,
	"group_id": "topics",
	"item_name": "Project Pivot",
	"column_values": "{\\"status\\":\\"14\\",\\"date4\\":\\"2024-07-29 11:00:00\\",\\"long_text\\":\\"Pivot demo\\",\\"numbers3\\":40}"
}

I think that this suggests there’s something odd about one of the fields UNAUTHORIZED_FIELD_OR_TYPE.

But when I look at the columns, using:

{
  boards(ids: [7833822272]) {
    columns {
      id
      type
      settings_str
    }
  }
}

I get the following:

{
  "data": {
    "boards": [
      {
        "columns": [
          {
            "id": "name",
            "type": "name",
            "settings_str": "{}"
          },
          {
            "id": "person",
            "type": "people",
            "settings_str": "{}"
          },
          {
            "id": "status",
            "type": "status",
            "settings_str": "{\\"done_colors\\":[1],\\"hide_footer\\":true,\\"color_mapping\\":{\\"1\\":14,\\"14\\":1},\\"labels\\":{\\"0\\":\\"Under consideration\\",\\"2\\":\\"Rejected\\",\\"7\\":\\"New request\\",\\"14\\":\\"Approved\\"},\\"labels_positions_v2\\":{\\"0\\":1,\\"2\\":3,\\"5\\":4,\\"7\\":0,\\"14\\":2},\\"labels_colors\\":{\\"0\\":{\\"color\\":\\"#fdab3d\\",\\"border\\":\\"#e99729\\",\\"var_name\\":\\"orange\\"},\\"2\\":{\\"color\\":\\"#df2f4a\\",\\"border\\":\\"#ce3048\\",\\"var_name\\":\\"red-shadow\\"},\\"7\\":{\\"color\\":\\"#579bfc\\",\\"border\\":\\"#4387e8\\",\\"var_name\\":\\"bright-blue\\"},\\"14\\":{\\"color\\":\\"#00c875\\",\\"border\\":\\"#00b461\\",\\"var_name\\":\\"green-shadow\\"}}}"
          },
          {
            "id": "date4",
            "type": "date",
            "settings_str": "{}"
          },
          {
            "id": "long_text",
            "type": "long_text",
            "settings_str": "{}"
          },
          {
            "id": "long_text9",
            "type": "long_text",
            "settings_str": "{}"
          },
          {
            "id": "anticipated_outcomes",
            "type": "long_text",
            "settings_str": "{}"
          },
          {
            "id": "numbers3",
            "type": "numbers",
            "settings_str": "{\\"unit\\":{\\"symbol\\":\\"$\\",\\"custom_unit\\":\\"\\",\\"direction\\":\\"left\\"}}"
          },
          {
            "id": "button__1",
            "type": "button",
            "settings_str": "{}"
          }
        ]
      }
    ]
  },
  "account_id": ...
}

All column types and values look perfectly reasonable.

What could be the reason for the UNAUTHORIZED_FIELD_OR_TYPE error message?