Impact of changing the Back-to-Back (BtB) sales order and/or purchase order

Action	Purchase order line status	Impact on purchase order
Changes to existing line (quantity or dispatch date)	Less than or equal to 20	Updates purchase order
Add SO line	Less than or equal to 20	For BtB purchase order lines with Direct print set to YES: Creates new purchase order line when you add a new SO line with the same BtB order type. Creates new purchase order when you add a new SO line with a different BtB order type. For Batch printed purchase order lines with status 10: You must run the Create BtB orders routine manually. This also applies when you add new lines to existing BtB sales orders. If a batch printed purchase order has status 20 and you add a new line to the sales order, and then run the Create BtB orders routine, the new order is created instead of the line being added to the corresponding purchase order.
Add SO line	Greater than 20	Creates new purchase order
Delete SO line	Less than or equal to 20 Note: For BtB direct orders, the sales order line cannot be deleted if the corresponding purchase order status is greater than 10.	Deletes purchase order line
Back order	Regardless of purchase order status	Reduces quantity on original line