@Jacques: The same applies to orders (both purchase and sales). In general, manufacturers and other producers of goods have the same intentions as traders. Namely to deliver on their promise. And a confirmed production order -production run in OFBiz- is a promise to a) produce and deliver the good intended and b) to use/consume the materials involved.
@all But yes, the economic situation that led to production order (and sales/purchase order) can change in the future which can lead to an order being canceled. For such scenarios correction mechanism must be available and used to maintain a correct AtP for the goods involved. For further reference I suggest to read up on documents provided by the organisations that deliver competing solutions (IBM, ORACLE, SAP, etc). They all agree on a definition of AtP including al lot more than just sales orders. And they all agree that confirmed (and not yet executed) production runs are part of the calculation of the AtP. Anyway, the majority of production runs have a lifespan that is shorter than a day, meaning that AtP and QoH are in sync again at the end of the day. But in production orders with a longer lifespan (as is possible in the process-oriented industry, like food and beverage, pharmaceuticals and chemical) it is important to have correct AtP to do proper MRP and SCM. Regards, Pierre
