I found a solution here (from April 2020) but can't get it to work. I have a column containing a ParcelID which may contain duplicates (it refers to a land parcel which may get sold numerous times). A second column has the property address. In some cases the propertyaddress is blank. I want to be able to use the ParcelID to find an occurence where the propertyaddress is listed and fill this into the blank cells for that PropertyID. The attached extract from the workbook shows the issue. I inserted a new column E where I entered the following formula: =IFNA(VLOOKUP(A2,'[nash_clean_excel_project (1).xlsx]Raw Data'!A1:D56478,4,1),VLOOKUP(A2,'[nash_clean_excel_project (1).xlsx]Raw Data'!A1:D56478,4,0)) As you can see, it has filled cells E18 and E19 with 0 and not the address from D18
Thanks in advance
Sample data