Unable to fetch ID of SharePoint API permissions

I am trying to fetch GUID of ProjectWebApp.FullControl and ProjectWebAppReporting.Read and add them to Sharepoint Api group.

I tried using below command to find IDs:

$result = Get-AzureADServicePrincipal -All $true | ? { $_.DisplayName -eq "Office 365 SharePoint Online" }

$result.AppRoles | FT ID, Value

I can see Ids of permissions, like User.ReadAll, Sites.FullControl.All etc., but I cant find Ids of ProjectWebApp.FullControl and ProjectWebAppReporting.Read permissions.

Can anyone help me to get GUIDs? or where Am I going wrong?

I tried in my environment and got the IDs successfully:

The command you are using will fetch the IDs of Application permissions.

Please note that, ProjectWebApp.FullControl and ProjectWebAppReporting.Read are Delegated permissions.

To fetch the IDs of Delegated permissions, modify the command like below:

$result = Get-AzureADServicePrincipal -All $true | ? { $_.DisplayName -eq "Office 365 SharePoint Online" }

$result.Oauth2Permissions | FT ID, Value

Reference:

azure - Need to find the id of Sites.FullControl.All in the SharePoint Api group - Stack Overflow