approver list is not defaulting for internal requisition

 Hi,

I am trying to setup AME for internal requisition and i am using only cost center as my condition and i had set up rules and i tested through test work bench , every ting is working fine.

In purchasing -->document types i assigned Internal_Req in approval transaction type and i tried to raise internal requisition but when i am about to approve i checked forward check box to see the approvals and i am not able to see any approval .

Please help me how can i solve this problem.

Thanks

Vinay