Hi, @Santhosh P
Thank you for posting in Microsoft Q&A forum.
Have we checked SUPSetup.log to see if the SUP is installed correctly? And check WCM.log, WSUSCtrl.log to see if there any error?
SUP related logs:
https://learn.microsoft.com/en-us/mem/configmgr/core/plan-design/hierarchy/log-files#BKMK_SUPLog
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