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Fix SharePoint Column Validation Formulas Disappearing or Causing Errors
Question details
Users need to resolve an issue where SharePoint list column validation formulas produce unexpected syntax errors, behave inconsistently, or disappear completely after saving.
- Product
- SharePoint Online
- Device & OS
- not provided
- Scenario
- Editing or saving column validation formulas within a modern SharePoint Online list.
- Observed behavior
- Validation formulas fail to save, disappear upon reloading the list settings, or generate unexplainable syntax errors despite appearing correct.
Ensure you have the necessary List Management permissions in SharePoint and verify that your formula syntax follows standard Microsoft functions before making changes.
Verify Formula Syntax and Clear Browser Cache
Rule out local browser caching issues and syntax errors caused by regional settings before escalating the issue.
In many cases, unexpected behavior in SharePoint list settings is caused by outdated browser cache or mismatched regional delimiters in formulas.
Ensure you are opening your SharePoint Online list in the modern experience rather than classic mode to avoid compatibility issues with newer updates.
Review your validation formula for correct syntax. Depending on your SharePoint site's regional settings, you may need to replace commas (,) with semicolons (;) to separate arguments properly.
Open your web browser settings, clear your cache and cookies, then restart the browser. Navigate back to List Settings > Validation settings and attempt to save the formula again.
Open a Service Request in Microsoft 365 Admin Center
If the issue persists and formulas continue to disappear, it indicates a backend service glitch requiring Microsoft's engineering team to investigate.
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Frequently Asked Questions
Why did my SharePoint column validation formula disappear after saving?
Formulas can disappear due to temporary browser caching issues, mismatched regional syntax, or backend SharePoint service glitches. Testing in the modern SharePoint experience and clearing your cache can help isolate the cause.
How do I fix a syntax error in a SharePoint list validation formula?
Ensure you are using the correct function names and argument separators. Depending on your SharePoint site's regional settings, you may need to use a comma (,) or a semicolon (;) to separate formula arguments.
Can a Microsoft 365 admin view logs for disappearing SharePoint formulas?
Yes, administrators can use the Microsoft 365 admin center to open a support ticket. The Microsoft support team will then help collect diagnostic data and HAR logs from your browser session to investigate the root cause.
Can I use WPS Office to edit files stored in SharePoint?
Yes, you can edit documents stored in SharePoint by downloading them or syncing them locally using OneDrive, then opening the Microsoft Office compatible files (.docx, .xlsx, .pptx) directly in WPS Office.
