Update SharePoint Online List Item using REST API, HTML, Spfx, Postman

SharePoint List item can be updated using REST API by referring to the item by its ID filed which is always unique. Let us look at an example, which can be validated using Postman.

You would eventually use the code snippet with Spfx (modern) or Content Editor (classic). For authentication, bearer token will be used.

If you are connecting to the List from outside of SharePoint like Java, .Net or Python code, you need to use a Bearer token (Client ID and Client Secret) to access the REST url.

Steps to generate Client ID and Secret - Register SharePoint App

This example assumes you have a list named "List1". Please make necessary modifications to the List name, column internal name wherever applicable.

✔️ Update SharePoint List Item using HTML, jQuery, Ajax

var webURL = _spPageContextInfo.webAbsoluteUrl;

$.ajax({  
    url: webURL + "/_api/web/lists/GetByTitle('List1')/items(10)",
    type: "POST",  
    headers: {  
        "accept": "application/json;odata=verbose",  
        "X-RequestDigest": $("#__REQUESTDIGEST").val(),  
        "content-Type": "application/json;odata=verbose",  
        "IF-MATCH": "*",  
        "X-HTTP-Method": "MERGE"  
    },  
    data: "{__metadata:{'type':'SP.Data.List1ListItem'},Title:'Title updated via REST API'}",  
    //Add more columns in above line to update

    success: function(data) {  
        //Perform further activity upon success, like displaying a notification
    },  
    error: function(error) {  
	//Log error and perform further activity upon error/exception
    }  
}); 

✔️ Update SharePoint List Item using Postman - PATCH

1. Initiate a PATCH method request.
2. Apply Header configuration parameters as below.



Key	Value
Accept	application/json;odata=verbose
Content-Type	application/json
Authorization	Bearer <token>
If-Match	*



3. In the Body section, select 'raw' and add below code.

{
"Title": "Title updated via REST API"
}

4. Enter request url in below format

https://c2c.sharepoint.com/sites/SPDev/_api/web/lists/GetByTitle('List1')/items(10)

5. Click Send.



Update SharePoint ListItem using REST API Postman


6. You should get a 204 No Content response. This means that the update request is successfully completed there is no content to return in response.
7. Validate the changes form SharePoint.

⚠️ Error - The request ETag value does not match the object's ETag value

{
    "error": {
        "code": "-1, Microsoft.SharePoint.Client.ClientServiceException",
        "message": {
            "lang": "en-US",
            "value": "The request ETag value '' does not match the object's ETag value '\"GUID,2\"'."
        }
    }
}