User Exit Data Retreival

Hi friends,

i am using an user exit PPCO0007, this is for production order.

in this exit i have structure for production order details , but when i trigger this i need to display related material and BOM details.

but those tables are not defined in that exit.

can anyone let me know how to display those details as well.

i mean how to declare those tables and to retreive data .

Please let me know,

Thanks in advance,

Regards,

Roberts.