Unable to add Service Principal with Role to Multiple Subscriptions

[chaddaignault]

I have three subscriptions. I successfully created a Service Principal and assigned a role to it (using New-AzADServicePrincipal -DisplayName "PRINCIPAL_NAME" -Role "Reader" -Scope "/subscriptions/SUBSCRIPTION_GUID"), however the Service Principal was added to one subscription. I want to add the same Service Principal with the same access to my other two subscriptions. I've tried using the below PowerShell command, however I get the error referenced below:

PS C:\github> New-AzRoleAssignment -ObjectId "PRINCIPAL_OBJECTID" -RoleDefinitionName "Reader" -Scope "/subscriptions/SUBSCRIPTION_GUID"

New-AzRoleAssignment : Principals of type Application cannot validly be used in role assignments.
At line:1 char:1

• New-AzRoleAssignment -ObjectId "PRINCIPAL_OBJECTID" ...

•   + CategoryInfo          : CloseError: (:) [New-AzRoleAssignment], CloudException
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.Resources.NewAzureRoleAssignmentCommand
  
  

Any help is appreciated.

[dingmeng-xue]

@chaddaignault , New-AzRoleAssignment respects default subscription in Azure context. You need to change the context Set-AzContext -SubscriptionId <> to switch another subscription and then call New-AzRoleAssignment again.

[chaddaignault]

@dingmeng-xue Thank you! That's what I was looking for