How to Use the ISERROR Function in WPS on Windows

This guide includes 3 topics: entering the ISERROR function, handling error results with IF, and checking nested or reference-based calculation issues; all 3 topics are available without membership.

How-to Index

How-to Guide

1. Enter the ISERROR function

Entry point: Formulas tab → formula bar

1. Open WPS Spreadsheets and select the cell where you want the result to appear.
2. Type = in the cell or formula bar.
3. Type ISERROR( and review the syntax hint.
4. Enter the expression or cell reference that you want to test.
5. Type the closing parenthesis and press Enter to see whether the result is TRUE or FALSE.

Success Criteria

• On-screen result: The cell shows TRUE or FALSE.
• What you can do next: You can keep editing, copy the formula, or fill it down to other cells.

Tips While Using

• Common mistake: If you do not start with =, the function will not run as a formula.
• Environment note: Use the function inside the WPS Spreadsheets editing interface.

2. Handle error results with IF

Entry point: target cell → formula bar

1. Select the cell where you want the handled result to appear.
2. Enter a formula such as =IF(ISERROR(A1/B1),"Result error",A1/B1).
3. Press Enter to confirm the formula.
4. Change the source data if needed and observe whether the output switches automatically.

Success Criteria

• On-screen result: The cell shows a custom message when the expression fails and shows the calculation result when it succeeds.
• What you can do next: You can copy the formula to other cells in the same column.

Tips While Using

• Common mistake: Text messages in the formula should be enclosed in double quotation marks.
• Environment note: Results recalculate automatically when referenced values change.

3. Check nested or reference calculation issues

Entry point: target cell → formula bar

1. Add ISERROR around a more complex formula, such as =ISERROR(VLOOKUP(D2,A:B,2,FALSE)).
2. Press Enter to check whether the current formula is in an error state.
3. If the result is TRUE, review the referenced cells, ranges, or function arguments.
4. Correct the reference or arguments and confirm that the result returns to FALSE.

Success Criteria

• On-screen result: You can quickly tell whether a complex formula currently contains an error.
• What you can do next: You can continue checking ranges, argument counts, or data type issues.

Tips While Using

• Common mistake: ISERROR detects an error but does not repair the formula automatically.
• Environment note: For cross-sheet or heavily nested formulas, review references step by step.