Create zero value PO lines from shopping cart
We are running extended classic scenario.
I have a scenario were I want to create a Shoppingcart with several items with the value zero (otherwise it is complete with vendors and all mandatory items). In standard this will result in a held, incomplete PO in the purchasers list.
Instead I want to create a zeroline in a PO and unflag it for invoice expected and in the backend integration flag it as free of charge. The problem I face is how do I prevent it from ending up at the purchasers list as incomplete?