Hi @Nhan Nguyen ,
it looks like you haven't the permission to create the (Azure Run As account (service principal) in the Azure AD.
The role owner
on subscription level is not allowed to create or manage users in Azure AD.
The built-in roles of Azure AD you will find here: https://learn.microsoft.com/en-us/azure/active-directory/roles/permissions-reference
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Regards
Andreas Baumgarten