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How to Fix Microsoft Bookings Required Custom Fields Submitted Empty

Rana Garcia Oct 9, 2026 868 views

Question details

Users can submit booking requests without filling out custom fields that are explicitly marked as required.

How to Fix Microsoft Bookings Required Custom Fields Submitted Empty

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Clients are submitting a booking form where required fields are bypassed without triggering a validation error.
Observed behavior: Required custom fields fail to enforce responses, often occurring after a page rebuild or a backend service disruption.

Before you start

Ensure you have administrator access to the Microsoft Bookings calendar and verify that your Microsoft 365 subscription is currently active.

Solution 1Recommended

Verify Field Settings and Clear Browser Cache

Ensure the required status is properly saved and rule out local browser caching issues.

Sometimes, changes to the booking page configuration are not successfully saved to the server, or the local browser loads an outdated cached version of the form.

Check service settings

Log into Microsoft Bookings, navigate to the Services page, and select the specific service experiencing the issue.

Verify required fields

Go to the Custom Fields section and double-check that the 'Required' toggle is turned on for the necessary fields.

Save and publish

Save your changes to ensure the backend updates successfully, then publish the page.

Clear cache and test

Clear your browser cache and cookies, open the booking page in an incognito or private window, and test submitting an empty required field.

Verify Field Settings and Clear Browser Cache

Testing Validation: When testing, ensure you do not fill in the required field to confirm the system correctly blocks the submission.

Solution 2

Recreate the Booking Page

If the current page is corrupted, creating a fresh booking page can resolve backend enforcement failures.

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Frequently Asked Questions

Why did my required fields stop working in Microsoft Bookings?

This issue frequently occurs after modifying an existing booking page, following a backend service disruption, or due to a syncing error where changes aren't properly propagated to the live page.

Can I make standard customer information fields required?

Yes. In the Microsoft Bookings service settings under 'Custom fields', you can click on standard customer information fields like Email or Phone Number and check the 'Required' box.

What should I do if recreating the booking page doesn't work?

If the issue persists across entirely new booking pages, the problem might be tied to your Microsoft 365 tenant's configuration. You should reach out to Microsoft Support or the Microsoft Bookings community for advanced administrative assistance.

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