Unable to add the Microsoft 365 Organization.

Cause:

This error occurs due to insufficient Microsoft API permissions, such as:

1. Missing all or any of the following API permissions assigned to the application
2. Admin consent might not have been granted to the API permissions of the application.

Solution:

Ensure that the above permissions have proper admin consent to the application. If not, assign the permissions and grant the admin consent. Refer to the following Vembu BDR help doc for more details.