Defining bonding parameter

Hello all,

I used CLAYFF force field which is defines here (https://community.accelrys.com/thread/2150) in my work. When I wanted to minimize the structure with Discover module, it warns that some bond parameters did not define, while in paper which this force field defines no bonding parameter are difined for thoes bonding. What should I do to solve this problem?

Regards,

Sajjad