Formula Auditing & Logic
Build an ISNOTERROR Formula Gate (NOT(ISERROR)) for Pre-Publish Workbook Checks
Construct the missing ISNOTERROR predicate with NOT(ISERROR(cell)) to score clean-row pass rates, block broken model tabs from release, and coordinate team sign-off.
Why spreadsheets have ISERROR and IFERROR—but no built-in ISNOTERROR
Spreadsheet engines provide ISERROR, ISERR, and ISNA to test whether a cell failed, yet conditional formatting rules, data-validation gates, and release-readiness checklists frequently ask the positive question: "Is every formula cell in this block completely free of errors?"
Composing NOT(ISERROR(C2)) creates a clean boolean gate (TRUE for any valid number, text, or boolean; FALSE for #DIV/0!, #N/A, #VALUE!, #REF!, #NAME?, or #NUM!), which aggregates across an entire schedule via COUNTIF(D2:D5, TRUE) / ROWS(D2:D5).
| Evaluated Cell C | Underlying Result | ISERROR(C) | NOT(ISERROR(C)) |
|---|---|---|---|
| =120 / 4 | 30 | FALSE | TRUE |
| =90 / 0 | #DIV/0! | TRUE | FALSE |
| =150 / 5 | 30 | FALSE | TRUE |
| =XLOOKUP("X", A2:A4, B2:B4) | #N/A | TRUE | FALSE |
Row-Level ISNOTERROR Predicate & Clean Pass Rate
Evaluate NOT(ISERROR(C2)) per row, then divide COUNTIF(D2:D5, TRUE) by ROWS(D2:D5) for the clean-row percentage.
=NOT(ISERROR(C2))Collaborative Pre-Publish Sign-Off Gate
In shared Arte Sheets financial models, teams place a top-banner release gate IF(Clean_Count = Total_Rows, "Publish_Ready", "Fix_Errors_First") and use @mentions in comments to assign any FALSE row to its section owner before granting viewer access.
=IF(COUNTIF(D2:D5, TRUE) = ROWS(D2:D5), "Publish_Ready", "Fix_Errors_First")Try the example
Use the original values or change them to test your understanding.