When trying to do a 'Verify' on Interview scheduling with Outlook Integration while "Exchange Online" is selected, there will be an error:
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SAP SuccessFactors Recruiting Management
Reproducing the Issue
1. Go to Admin center > Setup Interview Scheduling Outlook Integration
2. Choose "Exchange Online" and configure the each required fields from your Exchange / Azure portal
3. Click verify and you will receive a generic error
Per reviewing SF logs, 204Graph service exception Error code: MailboxNotEnabledForRESTAPI.
This error can for various reasons:
The mailbox is on a dedicated Microsoft Exchange Server or is not a valid Office 365 mailbox.
The mailbox is an Outlook.com account that hasn't been enabled yet.
The mailbox is not part of an Office 365 plan that includes Flow.
To fix this issue, use one of the following options, as appropriate for your situation.
Option 1: Migrate your mailbox account
If you don't have a valid Office 365 mailbox, you must submit a request to your Outlook administrator to migrate the mailbox account. Users who don't have administrator permissions can't migrate accounts. For information about how to migrate the mailbox account, see How to migrate mailbox data by using the Exchange Admin Center in Office 365.
Option 2: Wait for your mailbox to update, or request a developer preview account
Because enabling mailboxes on Outlook.com for the Outlook REST API happens over time, your existing Outlook.com account may still be in the queue. You can request a new, enabled Outlook.com developer preview account by sending an email message to email@example.com.
Option 3: Upgrade your Office 365 plan
The following Office 365 plans include the "Microsoft Flow for Office 365" plan:
Office 365 Business Essentials
Office 365 Business Premium
Office 365 Education
Office 365 Education Plus
Office 365 Enterprise E1
Office 365 Enterprise E3
Office 365 Enterprise E5
For complete information, please review the documentation from Microsoft via link https://docs.microsoft.com/en-us/exchange/troubleshoot/user-and-shared-mailboxes/rest-api-is-not-yet-supported-for-this-mailbox-error
2997844 - Error on Interview Scheduling with Outlook Integration using Modern Authentication - Recruiting Management
Interview Scheduling configuration, API Permission, Graph API, Invalid Tenant ID, Invalid Client ID , KBA , LOD-SF-RCM-IVW , Interview Central, Interviews, Scheduling etc , Problem