I have this formula =IF(ISNA(VLOOKUP(B2,CC_Tracker!B5:B4745,1,FALSE)),"No","Yes") that allows me to search a different sheet and if the reference number appears it puts Yes and if it doesn't then it puts No. This works perfectly for searching on one sheet but i need to check three different sheets. I have tried a few ways but they don't seem to work, can anyone help?