Validation - FBCJ

Dear Experts,

I want to create one validatiuon in FBCJ - Cash Journal.

my combination is with business transaction and the GL combination check the cost center, if that line item entered with another cost center it should trigger error.

I made via GBB0 -- cost accounting -- Line item -- Step 001

Prerequests : G/L = '40901007' AND Business Trans. = ' 22'

Check : Check : Cost Center = '1100000'

Message :      Message type : E

                       Message number : 392

                      Message text : Check the Cost Center

while am doing the FBCJ these conditions maintained, but its not triggering any any message even am giving th wrong one.

regards,

Sanju M S