There is a batch job that runs every 5 minutes, which sets everything at location: FVM025 to inventory status: FVM (not available).
5637355571 : A721 Change inventory status to Blocked, WH300, FVM025
Solution is (which must be completed within the next run of the above batch job):
- go in On-hand by location
- type Site, Warehouse, Location
- type item number at the bottom of the page
- press "Inventory status change" and set the desired item number to "Available" at the location
- now perform item no. transfer/move, while item no. at location FVM025 is "Available"