To establish communication between your Microsoft Dynamics 365 Business Central environment and the Anywhere Portal, define redirect URIs that the app calls after a successful authentication.
Steps
In the Azure Active Directory admin center, open your app's overview page and select the Redirect URIs section.
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Define the redirect URIs for both the Anywhere Portal app and the Microsoft Dynamics 365 Business Central app using the Add URI action under the Web tab.
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Note
Registering the Anywhere Portal as an app in Azure Active Directory is based on Microsoft documentation.
Granting the Azure app rights is based on Microsoft documnetation.