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Small and medium business | Business Central, N...
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How to connect with the multi-tenant app as an external user in the Azure portal?

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1. Am I able to connect to a multi-tenant app as an external user without any subscriptions?
2. Do I need to add external tenants to the manage tenants screen if I need to connect them with the multi-tenant apps?
3. Is it possible to connect a trial account as an external user to the multi-tenant application or can't it work with a trial account?

 
Can anyone please help me clarify the above questions?
I have set everything and then when I try to integrate with the same tenant,
 - I'm redirected to the callback method with the authorization code and able to generated an access token. (Used app's tenant ID to generate token)
 - Able to get companies from the below API response. (Used the app's tenant ID in the API).
https:/api.businesscentral.dynamics.com/v2.0// + tenant_Id + //Production/api/v2.0/companies
 
When I tried to connect with an external tenant user, 
 -  I'm redirected to the callback method with the authorization code and able to generated  an access token. (Used app's tenant ID to generate token)
 - Not able to get a response from the company API. I have tried it by using both the app's tenant ID and the user's tenant ID to get a response from the API. But, it says the user is not authorized.
 
Please clarify the above question and share with me some links for the multi-tenant web app in the Azure portal.
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  • Suggested answer
    YUN ZHU Profile Picture
    99,598 Super User 2026 Season 1 on at
    Hi, You can download the latest license guide to see the details. It should be noted that external user and external accountant license are different.
     
    Also, from the error message, it looks like there are no permissions set in Microsoft Entra Applications (Azure Active Directory Applications).
     
    Hope this helps.
    Thanks.
    ZHU

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