HI,
Check the J_1IEXCDTL and check status fields is it showing Posted or in process. If still is showing "in process" go to J1IEX and post the excise invoice with ref to 'Vendor excise inv No" or Internal no.
Note: Any how system showing Internal doc no check J_1IPART2 table is their entry available for this Int doc no.
Thanks
Mahesh Naik