Hello @Prerak Sola ,
Based on the details provided from the Entra admin center, it appears that you are using a Microsoft Entra ID B2C tenant.
Unfortunately, Microsoft Entra ID B2C applications do not support publisher verification. However, if your application is registered as an internal Microsoft Entra ID application within a standard Entra ID tenant, you can ensure it is marked as publisher verified. This would remove the ‘unverified’ tag during the login process.
Regarding the addition of an MPN ID, as outlined in the https://learn.microsoft.com/en-us/entra/fundamentals/get-started-premium (Mark your app as publisher verified) documentation, this process is only supported within a Microsoft Entra ID tenant. Based on the screenshot you provided, it looks like you are currently working within a B2C tenant, which does not support publisher verification. Additionally, publisher domains are not supported for Azure AD B2C app registrations.
Reference: https://learn.microsoft.com/en-us/entra/identity-platform/troubleshoot-publisher-verification#b2ctenantnotallowed
Since you are using the free plan, creating a new tenant is not an option. To create a new tenant, you would need a Microsoft Entra P1 or P2 license, which must be associated with a directory linked to a valid subscription.
For further guidance, you may refer to this official Microsoft documentation.
Let me know if you need any further assistance.
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