Wednesday, May 14, 2025

How to establish OAuth connection in Business Central for APIs

Hi All, 

Integrations are something I am really passionate about and are one of my favourites implementations!

Before you can start a development, the basic and first thing to do is to setup a connection. 

If you're working with Microsoft Dynamics 365 Business Central SaaS and need to connect through APIs — whether for integrations, automation, or custom apps — you'll need to register your app in Microsoft Entra ID (previously Azure AD). This enables secure OAuth 2.0 authentication and gives your app the right permissions to talk to Business Central.

Here is what you need to do: