ISERROR in WPS on Windows FAQ

Last updated:July 23, 2026

When using ISERROR, the most common questions focus on returned results, parameter entry, and combining the function with other formulas, with 3 frequent questions covered here.

FAQ

What does it mean when ISERROR returns TRUE?

  1. Check the target value or expression referenced inside ISERROR.
  2. If the referenced content is an error value, the function returns TRUE.
  3. If you need a follow-up action, combine ISERROR with IF or another conditional function to return a prompt or replacement result.

Why does the formula not return the result I expected?

  1. Check whether the parentheses are complete and the parameter is entered correctly.
  2. Confirm that the referenced field, cell, or expression type matches the formula.
  3. Save the formula again, test with a simpler expression if needed, and then add nested logic step by step.

Can ISERROR be used together with other functions?

  1. Yes. Start with the expression that you want to test.
  2. Wrap that expression with ISERROR to check whether it returns an error.
  3. If you want a custom output, continue combining it with IF, AND, or other conditional functions.

Glossary

TermDefinition
ISERRORA function that checks whether a target value is an error and usually returns TRUE or FALSE.
Formula fieldA field type in a multidimensional table that calculates results automatically from functions or expressions.
Error valueAn abnormal formula result, such as a reference error, type mismatch, or invalid divisor result.