---
sourceDocument: Xanadu API Reference
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/xanadu/api-reference

 Release :

    - xanadu

ft:locale :

    - en-US

ft:publication_title :

    - Xanadu API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# Validation script use case - Date and time

# Validation script use case - Date and time {#ariaid-title1}

* Release version: Xanadu
* 
* Updated February 6, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

To validate the input of all date/time fields, you can use the following in a validation
script (System DefinitionValidation Scripts).

Because the date/time format is hard-coded in this script, it must match your instance's date/time format. If your instance's date/time format changes, you must update your validation script.  
Set the validation script's type to "`glide_date_time`". Then, with this validation script, if a user enters an incorrect format in a date/time field, they will receive an error message.

    function validate (value){ 
     if (!value) {
        return true;
     }

     return (getDateFromFormat(value, 'yyyy-MM-dd HH:mm:ss') != 0);
    }

For a comprehensive use case, see [Restricting record access](https://servicenow-prod.fluidtopics.net/paO49Jg4bKhPWpPCxfFvXA "You can use a query business rule that executes before the database query to prevent users from accessing certain records.").

*[\>]: and then