a case where an auto Sales Order Shipment (SOS) is not being created by the system.
Details:
- Sales Order quantity: 13
- Inventory on hand: 15
- Qty available for shipping: 15
- Inventory exists at XYZ location and has been available since April 10
- Inventory is not reserved elsewhere
Despite sufficient availability, the SO line goes to Back Order and no auto SOS is created.
What conditions would prevent Acumatica from auto‑creating the SOS in this scenario?

and when I update manually shipping rule and create shipment , below error pop up.
