Hi Pavani,
It is standard SAP behavior where cancellation of Invoice ,same actual line items would be post as reverse entry. See accounting entries as follows.
GRN :- Material account...........Dr
To GRIR clearing ...................Cr
LIV :- GRIR Clearing ..............Dr
To Vendor ...........................Cr
Reverse the LIV :-
Vendor .............Dr
To GRIR Clearing............Cr
SAP suggested Manual clearing for above after reverse the LIV through F-44 for vendor.
Regards
Mani Kumar