Use Error Checking To Detect Errors In. Open a worksheet and select a cell that contains an error. In the Formula Tab click on Error Checking.

Click on the Formulas tab. Use error checking to detect errors in formulas Excel for the web Theres currently no way to use rules that check your formulas for errors in Excel Online. Error detection is the detection of errors caused by noise or other impairments during transmission from the transmitter to the receiver.
The Microsoft Excel ISERROR function can be used to check for error values such as NA VALUE REF DIV0 NUM NAME.
This allows you to go through the code one line at a time and identify the logical errors. If you have the Excel desktop application you can use the Open in Excel button to open your workbook to use error checking rules that help you check your formulas for errors. Like spellcheck the Error checker tool wont necessarily find all errors but it is a useful auditing tool as it works through your document to flag up the errors it spots. There are many tools to find errors in CSS documents and fix them ranging from syntax checking spelling mistakes to compatibility and performance issues.