SharePoint Property bag update

The 204 status code you’re seeing is actually a success status. It means that the server successfully processed the request, but is not returning any content1. This is a common response from REST APIs when updating data2.

SharePoint REST API does not return the updated item/object after updating it. It only returns status code 204 if the update request is successful23. If you want to get the updated item/object, you have to make another GET request23.

Here’s an example of how you can do this in JavaScript:

function updateItem(url, success) {
    $.ajax({
        url: _spPageContextInfo.webAbsoluteUrl + url,
        type: "PATCH",
        headers: {
            "accept": "application/json;odata=verbose",
        },
        success: function (data) {
            console.log("Update successful");
            success();
        },
        error: function (error) {
            alert(JSON.stringify(error));
        }
    });
}

function getItem(url, success) {
    $.ajax({
        url: _spPageContextInfo.webAbsoluteUrl + url,
        type: "GET",
        headers: {
            "accept": "application/json;odata=verbose",
        },
        success: function (data) {
            console.log(data.d.results);
            success(data.d.results);
        },
        error: function (error) {
            alert(JSON.stringify(error));
        }
    });
}

// Update the item
updateItem("/_api/Web/Lists/GetByTitle('YourListName')/Items(YourItemId)", function() {
    // After successful update, get the updated item
    getItem("/_api/Web/Lists/GetByTitle('YourListName')/Items(YourItemId)", function(data) {
        var result = data; // Use 'result' variable
    });
});

 

In this example, updateItem is used to update the item, and then getItem is called within the success callback of updateItem to retrieve the updated item4. This way, you can see the updated item after a successful update. Please replace 'YourListName' and YourItemId with your actual List Name and Item ID.

Thanks