Copy values from sheet 2 that are not in sheet 1

[mab1284]

I have a workbook with two spreadsheets. They both have a client number and a check number. I need to compare the two sheets and somehow identify the checks from sheet 2 that are missing from sheet 1 for each client.

I'm sure this is something quite easy but I cant seem to get anything to work

 

[kevatarvind]

u can use simple vlookup function