Hello Odooers,

For instance, when a customer orders 1 unit of a product with 0 units, a backorder is created for that order. In delivery orders, the demand is set to 1 unit, and when a user inputs the quantity with 1 unit. Supposedly a wizard pop-up "Create Backorder?" will show after clicking the button 'Validate'. But instead after clicking the 'Validate' button, it will automatically validate it even though the product has 0 units. 

I try to create a Server Action to implement this. But when I try to implement it, an "Invalid Operations" occurs. Answers will be appreciated. Thank you.

"Invalid Operations" 

You cannot validate a transfer if no quantities are reserved. To force the transfer, encode quantities.

Below is the code for Server Action:

for stock in records:

for line in records.move_ids_without_package:

if  line.quantity == line.product_uom_qty:

    action = stock.button_validate()

action = stock.button_validate()