Hello @Arun Mandala ,
Thank you for your question and reaching out.
For TS Per User CAL tracking and reporting to work, the computer account for the license server must be a member of the Terminal Server License Servers group in AD DS. If the license server is installed on a domain controller, the Network Service account must also be a member of the Terminal Server License Servers group.
You may add the computer account for the license server to the Terminal Server License Servers group in AD DS either by using TS Licensing Manager or by using Active Directory Users and Computers.
Below is Microsoft reference article mentioning the same scenario similar to yours.
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