MRP User Exit based on MRP controller not working properly?

Hi All,

I am running MRP both Forecast based and CBP, we are using the user exits to control the MRP for diff material types by assigning MRP Controllers for each material type, the user exit is controlled by conditions based on MRP controllers. Now the prob m facing is, as i run MRP by user exit, it plans not only the intended Materials but also planning few of the other materials, i have thoroughly checked all the material master settings in MRP views, and the user exit too. but cud not find anything that cud have lead me to the solution.

Please help me out, thank in advance.

Regards

Rashid