Hi,
I discovered that I receive an error when I delete order lines with discount on all pages, thus making the webshop unusable as long as the cart in question exists. When looking at the cart in the backend I can see that the discount order line is still in the cart even though the parent order line does not exist anymore. I suspect that it is Navision that is complaining when trying to calculate the price for the discount order line.
If I try to adjust the amount of an order line I am receiving the same error. However, when adjusting the amount, I am unable to inspect the cart in the backend. I am presented with this error in the backend.
Furthermore, when deleting the last product in a cart the cart will still have the price of the latest deleted order line.
Kind regards
Roald