Plant change in Sales Order not possible due to Sales Order BOM

Question

Hi all,
we are trying to change the Delivery Plant in a Sales Order after the creation of a Sales Order BOM, but it gives a V1773 message first, then a blocking error V1810. The same happens with a Production Order.
How can we change the Delivery Plant after the creation of one of these objects?
Our scenario:
- Make To Order
- Sales Order BOM created with transaction CS61
- Sales Order Routing created with transaction CA01
We need to create the Sales Order BOM on the Production Plant (which doesn't change), but we need to be able to change the Delivery Plant in any time.
Should you have further questions, feel free to ask.
Thanks in advance,
Giuseppe

Answer 1

Hello Caselli,
For V1773, please check the solution provided by note 588884, which is a modification. With this note it turns possible to delete all multi-level sales order BOM using transaction CSKB, which may be useful.
The behavior mentioned by you is the standard behavior of the system. The scenario works as designed, a plant change is only possible as long as there is no other document assigned to the sales order.
Longtext of V1 810 says:
The plant can no longer be changed in the following situations:
    2. There is a production order for the order item but it is not a static assembly order.
Your scenario seems to be point 2 as mentioned above. You can check the requirement type (VBAP-BEDAE) and requirement class in OVZH and assembly type (MNTGA) in OVZG.
If you change the plant for the items with existing production orders, it will cause the incorrect values in the COPA. An order item is assigned to plant A and the corresponding production order exits. This
means that the costs are assigned to plant A (this is the place where the costs accrue). Order and production order will be balanced at plant A.
If you now, after the process has already started, should allow to change the order to plant B the following examples of problems will come up:
- The costs accrued in plant A (see production order)
- The SD order is now assigned to plant B, this means billing will be with plant B
This leads to the fact the costs are on plant A, plant B has a benefit. Plant A cannot settle the costs and plant B has unexpected earnings. Inconsistencies in all involved process steps, SD, CO, COPA are the results.
If you want to change the plant in the sales order you'll have to perform these steps:
= Delete the production order.
= Change the plant of the sales order item from A to C.
  This should be possible unless there are other documents which are already assigned to this sales    order item. Save.
= Create a new production order and assign it to the sales order item again.
I hope I am able to help you with this information.
Best Regards,
Bhavin Joshi