I believe these are for Inter-site transaction. You buy and sale between your own sites 

@AanHGTS yes, but normally if i create an internal PO/CO, it does not trigger such event. any idea which setup of internal PO/CO creates this?

@vsonanann, in Company > Distribution > Order tab Inter-site Profitability should be ticked.

@Vimukthi Mahakumbura , what if i want to handle tax in this case??

@vsonanann , I haven’t tested a flow with taxes to my memory. But I think it should be possible. Have you tested a flow with taxes? What is your experience?

@Vimukthi Mahakumbura , i tried with taxes but seems like no transaction fires for that rather just without tax amount is transacted. but in my case i need a transaction for tax amount.