Register Entra App to enable Bizzjoiner to access Business Central Saas

To allow Bizzjoiner to securely communicate with your Microsoft Dynamics 365 Business Central SaaS environment, you must register an application in Microsoft Entra ID (formerly Azure Active Directory) and grant it the appropriate permissions.

This guide walks you through the required steps.

Overview

Bizzjoiner integrates with Business Central using secure, token-based authentication via Microsoft Entra ID. By registering an app, you establish a trusted identity that Bizzjoiner uses to access your Business Central APIs.

The process includes:

  • Registering an application in Entra ID

  • Creating a client secret

  • Assigning API permissions for Business Central

  • Granting admin consent

Prerequisites

Before you begin, ensure that you:

  • Have access to the Microsoft Entra admin center

  • Have Global Administrator or Application Administrator permissions

Step 1 – Register a New Application

  1. Go to the Microsoft Entra admin center:
    https://entra.microsoft.com

  2. Navigate to:
    Identity → Applications → App registrations

  3. Click New registration

  4. Enter the following details:

    • Name: Bizzjoiner – BC Connector – ProductionEnvironment – Company X

    • Supported account types:
      Select Accounts in this organizational directory only

    • Redirect URI: https://businesscentral.dynamics.com/OAuthLanding.htm

  5. Click Register

Step 2 – Copy Application (Client) ID and Tenant ID

After registration:

  1. Locate:

    • Application (client) ID

    • Directory (tenant) ID

  2. Save these values — they will be required in Bizzjoiner.

Step 3 – Create a Client Secret

  1. Go to:
    Certificates & secrets

  2. Click New client secret

  3. Add:

    • Description: Bizzjoiner Secret

    • Expiration: Recommended 12–24 months

  4. Click Add

  5. Important: Copy the secret value immediately — it will not be shown again.

Step 4 – Assign API Permissions

  1. Navigate to:
    API permissions → Add a permission

  2. Select:
    Dynamics 365 Business Central

  3. Choose:

    • Application permissions

  4. Add the following permission:

    • Financials.ReadWrite.All

  5. Click Add permissions

Step 5 – Grant Admin Consent

  1. Click Grant admin consent for [Your Organization]

  2. Confirm the action

  3. Ensure the status shows:
    ✅ Granted for your organization

Step 6 – Configure Business Central Access

In Business Central:

  1. Search for: Microsoft Entra Applications

  2. Create a new record:

    • Client ID: Paste the Application (client) ID

    • Description: Bizzjoiner Connector

  3. Assign appropriate permission sets, for example:

    • BIZZJOINER CONNECTOR (or a custom least-privilege set)

  4. Click Grant Consent  and then Accept.