Diagnosis
The material belongs to a material type whose stocks are not managed on a quantity basis.
Procedure
Enter a different material or terminate processing.
If required, check the setting of the material type for the plant in the Customizing system of the material master data.
SOLUTION:
STEP 1 : Go to Define Attributes of Material Types or T Code OMS2
STEP 2 : Select Material Type > Double-click on Quantity/Value Updating
STEP 3 : Select your plant and then Tick both Qty & Value update check box > SAVE
Thanks,
Adharsh