The short pick process (on mobile device) with the current logics allow the user to select a location, from the manual reallocation form, even if the goods are no longer available after posting the inventory journal.
Although this is wrong this is possible because the current solution follow the steps below:
1- Selection of short pick function
2- Selection of quantity to be picked
3- Manual reallocation of shortpicked quantity (selecting one or more location from the suggested)
4- Reservation removing for the item in order to make quantities available for the inventory journal
5- Posting of the inventory journal for the adjustment
6- Display of the picking form to continue the picking flow (at the moment according our scenario the system display us the error message “there is not enough inventory available to perform the reallocation”. This message appears because the manual reallocation is done before the points 5 and 6)

In order to solve the issue and indicate to the user the correct location where will be possible pick the item the logics should follow these steps:
1- Selection of short pick function
2- Selection of quantity to be picked
3- Reservation removing for the item in order to make quantities available for the inventory journal
4- Posting of the inventory journal for the adjustment
5- Manual reallocation of shortpicked quantity (selecting one or more location from the suggested)
6- Display of the picking form to continue the picking flow

In this way, the manual reallocation form will be displayed only after the item quantities have been successfully updated. In this case the user will be sure that the location you will select will contain the availability with which to complete the picking phase.