MIGO for Production Order - BADI

Hi,

I have implemented from ABAPER a BADI in MIGO which assigns batch number automatically to the receiving material. In the lower area in BATCH tab CLASSIFICATION button is available but by clicking on this button it does not open the characteristics screen for input. While i have created a class and its characteristics and assigned this class to the material also. Now where is the problem?

Kindly reply its urgent.

Regards,

Hammad