1. Cancelling an Order with Drop Ship Lines. An Order with Drop Ship Lines is allowed to Cancel only if all requisitions for the Order are cancelled and no receiving is done for these lines. If Requisition doesnot exist for any of the Drop Ship Lines, then the Order can be cancelled.

2. Cancelling a Drop Ship Line in an Order. A Drop Ship Line in an Order can be cancelled only when the corresponding Requistion is cancelled. Quantity allowed to cancel for this line is Requistion's cancelled quantity - Order's cancelled quantity (if Order is partially cancelled already). If Requisition doesnot exist, then the Quantity allowed to cancel is Order's ordered quantity - Order's cancelled quantity (if Order is partially cancelled already).

Note: In both scenarios above, if Order's data is interfaced to Requisition table and Requisition is not yet created, all the Ordered quantity is cancelled. This may again result in Receiving against a cancelled Drop Ship Order. This case is not handled as Purchase Release is a Request Set of 'Purchase Release' and 'Requisition Import'.