Currently we are facing an issue with the sales orders when Back order processing is triggered from APO system. We have the concept of main item, sub item and sub item is the one relevant for delivery. When back order processing is triggered from APO, standard program initially sets the sub item for deletion, then does a availability check and create the sub item back in the sales order. In some cases, it is not creating the sub items back so we are losing the delivery relevant item from the sales orders. We believe it happens when desired delivery date is not met but couldn't confirm.
Availability check rule is set to 'C' in R/3.
Kindly advise on this.