Set Up To Do
Important prerequisite
The following steps should be executed inside the Azure AD application which is created according to the instructions from the Set Up of the Azure AD Application
Request API Application Permissions
Choose Microsoft Graph and then Application Permissions

Request permission for the following resource:
Tasks.Read.All
Request API Delegated Permissions
Choose Microsoft Graph and then Delegated Permissions
Request permission for the following resource:
Tasks.Read

Final checks
After completing the steps above, verify that:
Graph API application & delegated permissions are requested and admin consent is granted
If you need assistance please reach out to us via IT@ambersearch.de