MRP exceptions

Hi Everyone,

In the MD04 screen exception messages are created for the purchase requisitions that are delayed. this is done when the MRP type is PD. I am trying to created the exception messages for the purchase reqs with MRP type X0. Is there any way I can show exception messages when the MRP type is X0. I am planning in APO but want to see exceptions in MD04. Thanks

Regards

Akshay