using caly FF in forcite for ceramic materials

Hi
I add clay force field  to forcite forcefileds list.
I want try to MD on ceramic material. but after the run the processe not complate and show below eror:
"
Unable to calculate the ForcefieldType for particle 'H'
The typing engine has been unable to assign a forcefield type.
 This is because the typing engine has found no typing rules that match (except ?)"
What can i fix it?
Best regards