Resource management ->New Resource->Properties->General->Details->"Stocked in inventory"
Material resources resources once allotted into Warehouse, Check Box option of “Stocked in inventory” got Freeze.
Solution:
Renumbering the existing material resources and creating a new one.
Note:
1.Material Resource which are not allotted into warehouse can be edited through check box option “Stocked in inventory”.
2.Even after deleting the material resource once allotted in warehouse item, the “stocked in inventory option” not editable.