SFTP authentication using Active Directory group

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I have joined my RHEL to Active Directory and I want to use an AD group to authenticated my SFTP connection.
my sshd_config is :

Match group my-ad-group-in lowercase
ChrootDirectory /shares/sftp-share
X11Forwarding no
AllowTcpForwarding no
PermitTTY no
ForceCommand internal-sftp

where is my mistake?
thanks in advance