Change Base Unit of Measure

Hi Experts,

We have opened one material master last week. There was no movement in the material master in any plant. Neither, it has attached to any BOM. But when we are changing the base unit of measure, it shows display errors.

How can we change the base unit of measure. When opening the code, it has wrongly maintained as NOS but acutually it has to be maintained as KG.

Kindly give solution.

Regards

Rajeev Gupta