user exit co01

GUY'S

when i go for tcode:CA02 and set status to 3 in general

data section and then go to tcode co01 to create

production order for the same material and same plant,

it pop up message ( routing not released:15294)

and then it save it.but requriment is not to create

production order when routing is set to 3,problem

is i ckecked all possile user-exit ,but non of the user-exit is triggered for particular situation,pls help,

it's urgent and i am not getting any idea