Reference:
Comprehensive Detailed ExplanationWhen you register a bot using the Bot Channels Registration service in Azure, the bot must authenticate against the Azure Bot Service to establish secure communication.
This requires:
appId (Microsoft App ID)
When you register the bot in Azure Active Directory (via Azure Bot Service or Azure AD App Registrations), an Application (client) ID is generated.
This App ID uniquely identifies your bot application.
It is used by Azure Bot Service to authenticate requests and map them to your bot instance.
appSecret (Microsoft App Password / Client Secret)
Along with the App ID, you must create a client secret (app password).
This serves as the bot's credentials, allowing it to securely authenticate when deployed.
Without this secret, your bot cannot exchange secure tokens with the Bot Framework service.
Why not the other options?A. botId: This is a legacy value used in early Bot Framework versions. Now, the App ID replaces this function.
B). tenantId: Required in some authentication scenarios (like multi-tenant AAD apps), but not required for Bot Channels Registration to work.
D). objectId: This is an Azure AD property of the app registration, but it is not required to configure or deploy the bot.
The answer: C. appIdE. appSecret
Microsoft ReferencesRegister a bot with Azure Bot Service
Microsoft Bot Framework authentication
Create an app ID and password for your bot