Question
How can I log VLOOKUP errors in my VBA macro?
Asked by: USER8677
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Answer (45)
You can log VLOOKUP errors by creating a dedicated log sheet or a text file. Within your error handling block (after `On Error Resume Next` and checking `IsError`), you can write a descriptive message to the log. This message should include the lookup value that failed, the worksheet and range it was searched in, and the date/time of the error. For example: `If IsError(lookupResult) Then Dim logSheet As Worksheet Set logSheet = ThisWorkbook.Sheets("ErrorLog") logSheet.Cells(Rows.Count, 1).End(xlUp).Offset(1, 0).Value = Now() logSheet.Cells(Rows.Count, 2).End(xlUp).Offset(0, 1).Value = "VLOOKUP failed for value: " & lookup_value Else ... End If`