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Sending documents from Business Central to SharePoint

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Posted on by LK-07050844-0

Hi guys,

I am working on integration of Business Central with SharePoint, specifically in sending uploaded files in BC to SharePoint. I coded a function to get the token, and it succeeds, but my HTTP post function fails. This is my first time doing an integration like this, so I am not sure if I am doing this properly. Am I missing some permissions maybe? Noteworthy, I made a custom SharePoint Setup table in which I store the Client ID and Secret and the tenant ID, and also the URLs to the specific folders in SharePoint to which I want to send the file/files. Since I am new at this, any suggestion would be helpful.

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Dynamics 365 Business Central

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Nimsara Jayathilaka. 4,950 Super User 2026 Season 1 on at

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Hi

When integrating Business Central with SharePoint to upload files, obtaining the authentication token is only the first step. The most common reason HTTP POST calls fail is missing or misconfigured permissions—your Azure AD app must have Sites.ReadWrite.All or Files.ReadWrite.All application permissions with admin consent. Ensure the access token is issued for Microsoft Graph and includes the required scopes. The POST request must target the correct SharePoint folder URL, include the proper headers (Authorization: Bearer {token}, Content-Type: application/octet-stream), and send the file in binary format. Testing the API in tools like Postman can help isolate issues, and using Business Central’s built-in SharePoint integration module can simplify authentication and file handling.

Docs : https://yzhums.com/18630/

https://www.crmsoftwareblog.com/2024/03/how-to-setup-a-dynamics-365-integration-with-sharepoint/

https://muriungimartin.hashnode.dev/mastering-sharepoint-online-integration-a-step-by-step-guide-to-connect-with-business-central-using-c-and-al

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Nimsara

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OussamaSabbouh 12,878 Super User 2026 Season 1 on at

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Hello,

To send files from Business Central to SharePoint:

Use the SharePoint module in the System Application, it handles authentication and file uploads automatically.

If using raw HTTP, enable Allow HttpClient Requests in Extension Management.

Authenticate via OAuth2 client credentials and include the Authorization: Bearer <token> header.

Your Entra app must have SharePoint or Graph write permissions with admin consent.

For small files, use SharePoint REST (Files/add); for large files, use a Graph upload session.

Regards,

Oussama

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Rishabh Kanaskar 6,219 Super User 2026 Season 1 on at

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Hi,

You can also use Power Automate with the SharePoint connector to create a file from Business Central attachments. Alternatively, configure Microsoft Graph with proper app permissions and grant access to the target site for direct uploads.

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Rishabh

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Aman Kakkar 2,977 Super User 2026 Season 1 on at

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Hi,

You can refer these articles.

How to Upload Files to SharePoint from Business Central Using AL and Microsoft Graph API

Dynamics 365 Business Central: How to upload files from Business Central to SharePoint (document library) via AL (Graph API) | Dynamics 365 Lab

Hope this helps.

Aman K

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YUN ZHU 99,084 Super User 2026 Season 1 on at

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Hi, hope the following helps as well.

Dynamics 365 Business Central Blog Series: Integrate Business Central with SharePoint

https://yzhums.com/63735/

Thanks.

ZHU

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LK-07050844-0 70 on at

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Hi guys, just a follow up.

Now I get this error:

Failed. Status: 400, Error: , LastError: An error occurred when communicating with Dataverse.

Detailed description: One or more errors occurred. (No such host is known. (soltestprod.crm4.dynamics.com:443)).

Not sure how to solve this.

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LK-07050844-0 70 on at

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When using the debugger, this is the message I got in the response:
The request was blocked by the runtime to prevent accidental use of production services

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Khushbu Rajvi. 22,128 Super User 2026 Season 1 on at

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Please Check: Error: The request was blocked by the runtime to prevent accidental use of production services..

Error Message “The request was blocked by the runtime to prevent accidental use of production services” in Microsoft Dynamics 365 Business Central – azurecurve

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