Hi Deepak,
We have created a CustomCloseOrder Task in On-Premise which submits the last composing receipts and push it to SAP, as in our case we need to CloseOrder in SAP more importantly than in Ariba, because our Budget is managed in SAP.
However, This makes sense in On-Demand, to have the Order Closed in Ariba, such that the budget is released is Ariba, but I guess there should be a Configurable Scheduled Task in On-Demand, which does this closing Automatically if there was No Action in the PO for the past few num of days.
Not sure if i am correct, but we can't expect the end user to go ahead and close the order if he doesn't want to receive it, he will always want to keep it alive until he can.
In order to get this into process, end user needs to be forced to close Order after certain days, if he is not taking action on it,
I understand there are long running orders, I guess that needs to be handled using BPO's
Just a thought, not sure if this makes sense for other customers of Ariba.