In Microsoft Excel, if the inputs are not valid, then the forula will show the error. This error may be like, #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!.
To avoid this error, you can use the “ISERROR” or “IFERROR” formula. “IFERROR” is simple and easy, but this function is available only in Excel 2007 and above versions.
In this post you can learn how to use these two formulas to avoid the error.