regarding shopfloor rejection

Dear Guru's

i have done shopfloor rejection of a material.the steps i have followed.

1.create one more line item in the existing P.O

2. done migo and selected only part1 in excise tab.

3.posting excise thru J1is.

Then it should appear in J2I9 report .

But it is not appearing,but it is not appearing how to cancel the entries posted thru J1IS.Pls help me out

Thanks in advance