Other features or issues related to Microsoft Partner Center
The message indicates that the Partner Center registration was blocked during Microsoft's account verification/trust checks. It does not necessarily mean that there is a problem with your Outlook account or that selecting Individual was incorrect.
Since the registration was rejected immediately after submitting your personal details, I would recommend the following:
Make sure your name, address, and phone number exactly match your official information. Avoid abbreviations or variations in the address where possible.
Make sure the Microsoft account you're using has accurate profile and security information.
If possible, avoid using a VPN or proxy while completing the registration and use a normal residential/network connection.
Don't repeatedly create new Partner Center accounts to work around the rejection, as this can potentially make verification more difficult.
Contact Microsoft Partner Center Support and provide the information from the error:
Reference number: 715-123225
Transaction ID: `4db4dd69-798a-445e-a8d7-27d3334e45d1`
Correlation ID: `5c8c4331-9cd9-41fe-b64f-f805fa60cf24`
Support should be able to determine which verification check caused the registration to be blocked. The correlation ID and transaction ID are particularly useful because this type of rejection normally cannot be resolved just by changing a setting in Edge or Outlook.
I would also avoid posting additional personal information (full address, phone number, government ID, etc.) publicly in the forum. Provide those details only through Microsoft's official support channel if requested.