When warehouse worker declares a short pick they enter the real quantity they were able to pick, not the inventory correction.

But the system currently replaces the unit used for picking (the highest possible one in Unit sequence group Id) with the inventory unit.

So if I'm picking boxes and there is one missing compared to the requested quantity, I am not supposed to enter the real quantity of boxes I'm picking but its equivalent in pieces...!?

That is not user-friendly and most of warehouse workers won't see the unit change and will declare a wrong quantity.

If system has to make a stock adjustment based on a short-picking, it should convert to the inventory unit. It is not the warehouse worker's job to work with several units in the same sales order picking process.

Not all items have the same units and unit conversions, there is no warning message, and user can only count what they have in front of them (boxes in my example).

Furthermore if you activate "work confirmation" on picking quantity, the mobile app. waits for boxes. Only short-pick has a different behavior and this leads to mistakes.