problems monitoring tool implementation

I am currently doing a Windows Virtual Desktop implementation for my client, for some reasons the CSP model had to be used to implement a new Azure account, they already have an Azure AD subscription, because of Azure policy we cannot use the same domain of the client in two Azure AD tenants, according to the following link it is possible to configure WVD in case of using the CSP model to consume the client's Azure AD by considering some special permissions, when trying to implement the monitoring tamplate quenera problems since you are not recognizing the permissions for the use of (https://github.com/Azure/RDS-Templates/tree/master/wvd-templates/diagnostics-sample/deploy) I come to you in order to request help since it is An important issue is to implement this monitoring tool.

The special configuration that was made is (https://docs.microsoft.com/en-us/azure/virtual-desktop/tenant-setup-azure-active-directory) in the What you need to set up a tenant section.