Hi Vinayak,
This is standard and the system is behaving as per design.
Whenever you do any action the interaction record id created and this is designed so that you get a log what is happening.
If you do not want this to happen then you have to supress the IR creation completely.
If it is required that no new interaction record should be created, please implement BADI CRM_IC_IARECORD to suppress the creation of the interaction record.
Regards,
Gervase