@Mithunkumar Chopda Thank you for reaching out to us, apologies for the delayed response, did quick repro of this scenario id to objectguid attribute mapping, this mapping wont work as per my understanding objectguid value in on-premise AD is mechanically generated (each object in AD has unique object guid) - for example: you as the admin never state "I want this object to have this value for ObjectGuid/ObjectID/ID".
Hope this clarifies your query, if not happy to connect offline to discuss on this.
Let me know if you have any further questions, feel free to post back.