Handling Partial GR for PO Items

Hi Experts

We have current design as follows:

We defined internal event code "Quantity Received". Whenever the GR is posted for PO Item, this event is getting reported though the GR is done for partial quantity. We are capturing the actual GR quantity and Open Quantity in the form of parameters.

Now the requirement is to have this event code not to be reported (it should not turn to Green) if the GR quantity is not matching with Order Quantity. It should turn green only when the received quantity matches with ordered quantity.

Can you suggest how to handle this situation?

Thanks

Ravi