Send change order confirmation

Hi, Attached is from product documentation. 

Some recent threads we discussed reg the same - 

Since you have already understood what is mentioned in the field help, for example, in a multi-site internal trade, when the CO is updated, it will automatically send a confirmation to the connected PO of the demand site.

Hi @Vimukthi Mahakumbura 

I've just looked but I can't find an answer because I don't see what this button adds. 

When do you think it should do something? 

@audreyS given other settings are correctly set, changing this parameter would decide if an order confirmation is sent to the demand site automatically or not in a change of customer order. 

hi @Vimukthi Mahakumbura 

Ok very well do you know the settings that need to be made for this to work please. 

Is confirmation sent if you change the internal customer order to the external customer order? Or is it the other way around? 

@audreyS pls check the above two threads I have mentioned for the settings
‘Is confirmation sent if you change the internal customer order’ - yes, i.e. release