ISERR in WPS on Windows FAQ

Last updated:July 17, 2026

Common questions about ISERR usually involve formula entry, result interpretation, and calculation issues; this section includes 4 frequent questions and a glossary.

FAQ

What should I do if ISERR shows an error after I enter it?

  1. Check whether the formula starts with =.
  2. Check whether the parentheses are paired correctly and the separators are valid.
  3. Confirm that the reference, expression, or worksheet name is valid.
  4. Press Enter again after correcting the formula.

How can I view the ISERR function description?

  1. Type =ISERR( in a cell.
  2. Review the syntax prompt and argument guidance shown by the app.
  3. Complete the argument based on the prompt and confirm the formula.

Why does ISERR not return TRUE when I expect it to?

  1. Check whether the current result is #N/A, because ISERR does not treat #N/A as TRUE.
  2. Confirm that the tested value actually returns an error.
  3. Adjust the formula combination if you need to cover a different error case.

What should I do if the calculation result is incorrect?

  1. Check whether the referenced cells use the correct data format.
  2. Check for text-formatted numbers, invalid references, or circular references.
  3. Edit the formula again and trigger recalculation if needed, then review the updated result.

Glossary

TermDefinition
ISERRA function that checks whether a value is an error other than #N/A and returns TRUE or FALSE.
Nested formulaA formula structure that contains another function or expression inside it.
Cross-worksheet referenceA formula reference that points to a cell in another worksheet.
Syntax guidanceThe parameter and format prompt shown while you type a function.