Microsoft Graph: Uploading Attachments to Existing SharePoint List Items

Question

Hello,

I’m familiar with using the Microsoft Graph API to upload small files (under 4 MB) to Drive items and SharePoint document libraries. However, my use case involves SharePoint Lists where attachments need to be added to existing list items, rather than storing files in a document library.

Whether it’s possible to upload files directly as attachments to an existing ListItem using Microsoft Graph.

Is uploading file attachments to existing SharePoint list items supported via the Graph API? If so, which endpoint should be used

Answer 1

Hi @Jenson

Thank you for reaching out to Microsoft Q&A forum.

After doing some research, I found that the feature you request is currently unavailable.

Here are some actions you can do with ListItems, you can create a new item, update fields. However, attach file to a list item is unsupported via Graph API at the moment.

listItem resource type - Microsoft Graph v1.0 | Microsoft Learn

You can also upvote for this idea here [SharePoint] Be able to attach files to list items using Graph API. | Microsoft Community Hub.

The more people vote for it, the higher chance Microsoft will consider making it a feature in the future.

Alternatively, you can consider using PnP PowerShell to achieve this. Please read this document for more details. Add-PnPListItemAttachment | PnP PowerShell

I hope this information helps. If you have any questions, please feel free to ask me.

---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.