We just found out that ‘Inventory Detail’ section on the item receipt is not mandatory and the users can create item receipt without putting in any details about bin, etc. We would like to make this section mandatory for every line on any item receipt but the option is not available either at the form customisation or through custom workflows. Any idea how this can be achieved? Thanks

As far as I have seen, item receipt is about the only transaction type that you cannot require inventory detail on.