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Dynamic 365 F&O API - ERROR 401

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Posted on by CU27061454-1

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Hello I need help trying to fetch my data using Client_credentials. Below is what I have done so far.

1. I created the application in Azure and assigned app permissions

2. In F&O I set the client id into the Entra ID settings.

3. I fetch my access token

JWT.io ->

4. I use token in call and get 401 error. I have confirmed that I can access to this exact endpoint in my browser but not in Postman.

browser ->

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Hana Xue Microsoft Employee on at

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Dynamic 365 F&O API - ERROR 401

Hi,
This blog describes the specific steps to use Postman with Dynamics 365 for WebAPI. You can also refer to it for setup.
Use Postman for Dynamics 365 with Web API (dynamicsforcrm.com)
Best Regards,
Hana
Layan Jwei 4,220 Super User on at

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Dynamic 365 F&O API - ERROR 401

Hi,

What's the security role for the user defined in EntraId application form? Maybe make sure it's a sys admin.

Here's an article i wrote with details steps on how to connect with F&O via postman

https://www.ljdynamicswritings.com/2024/03/how-to-authenticate-with-d365fo.html?m=1

Thanks,

Layan Jweihan

Please mark this answer as "Verified" if it solved your issue. In order to help others who will face a similar issue in the future.

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