Hi Ganesh,I was able to solve this problem by first associating my own
ID (Third Party ID) with the AT profile using mbox parameter
mbox3rdPartyId
https://experienceleague.adobe.com/docs/target/using/audiences/visitor-profiles/3rd-party-id.html?lang=enand
then, updating the AT profile using this third party ID with the segment
information using different methods such as APIs, Bulk Update, etc.
http://developers.adobetarget.com/api/#updating-profiles