The ASSERT condition was violated in FPM

Hi All,

I got a error after adding  new UIBB in the layout.In Layout i have sucessfully added new UIBB but the problem is  when i was trying to create a material through the transaction NWBC.In that i am able to see the input field and when i was trying to give the data in the input field ,it throughs the error "The ASSERT condition was violated" .Can any please tell me the exact solution to come out of this problem and fix the problem.

Thanks a lot in advance.....

Regards,

Biren