How to Connect to an Existing D365F&O Environment Using Postman - Part 1

Do you want to learn how to connect to a D365F&O instance using Postman?

If your answer is Yes this post is for you.

Existing blog posts about the same topic were not sufficient for me to be successful.

This blog post describes the first part of the required steps to a successful connection using Postman to D365F&O.

Postman

Postman is a platform user-friendly for non-techies that allows to connect to existing entry points. It is available in a web version and no software installation is required.

Connect to a D365F&O instance using Postman (Pre-Requirements)

Before connecting to a D365F&O instance using Postman is mandatory to follow a subset of steps.

Step 1 - Access to https://www.postman.com/ and create an account

Step 2 - Register D365 as an App in Azure Portal

Go to portal.azure.com and login (As SysAdmin permissions)

Using the search box, type ‘Azure Active Directory’ or 'Entra ID'.

After selecting, take note of the ‘Tenant ID’ value. It will be needed later and referred as Directory ID.

Select 'Manage' > 'App registrations' and 'New Registration'

Enter in a name.

Select the option for ‘Accounts in this organization directory only’.

Then click the Register button.

Take note of the Application (client) ID value. It will be needed later and referred as ‘Client ID‘.

Step 3 - Create Client Secret ID

Select 'Manage' > 'Certificates & secrets' > 'New client secret'.

Add a description, duration to expire and Add button.

Take note of the value shown. It will be needed later and referred as ‘Client Secret ID‘.

Step 4 - Finally the last step and where all things get connected is to register the external application in D365. In a separate browser window, login into your D365 instance and search by 'Entra'.

Create a new entry with Client ID, name and User ID.

Client ID should be the same value as captured in Application (client) ID value. For User ID, use the Admin one.

All is ready from the back-office perspective to be possible to connect Postman with D365.

Please read the blog post with Part 2 to know how to finish the end-to-end connection.