We are tailoring the bridge between VM and ERP.
If there are 10 items in stock and 8 items in reservations, you actually have
- 10 boxes in stock
- in stock 8 pcs out of 10 pcs are packed and reserved for customers = no one can order them until the ordering process is completed
- in stock you have 2 pcs of 10 pcs free to order
This is the correct functionality of the eshop and the VM surprisingly adheres to it.
Even for ERP (warehouse) it is right, because if the control comes from the tax office, you still have the right number of pieces in stock - 10 pieces == you have 10 pieces in stock and therefore in the cost of the company.
I don't really understand what you're trying to achieve - it seems to me that you want only 2 pieces in stock?
But that contradicts the laws of nature - I still have 10 pieces of goods on the shelf in the warehouse - they are not lost anywhere, no one took them.
Sorry - Google Translate
