---
sourceDocument: Xanadu ServiceNow AI Platform Administration
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/xanadu/platform-administration

 Release :

    - xanadu

ft:locale :

    - en-US

ft:publication_title :

    - Xanadu ServiceNow AI Platform Administration

ft:clusterId :

    - platadm

bundleId :

    - platadm

workflow :

    - Platform


---

# Deleting custom tables

# Deleting custom tables {#ariaid-title1}

* Release version: Xanadu
* 
* Updated August 1, 2024
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

Administrators can delete custom tables that are no longer needed. For example, delete a
table from an application that is under development because the business requirements
change.

A table is custom if an administrator created it and it is not part of a system upgrade or
plugin activation. Custom table names always begins with `u_`, or
`x_` for scoped tables.  
Warning:  
You cannot delete base system tables. If you inadvertently delete such a table, it is automatically recreated when you upgrade an instance.

You cannot delete a table
that has associated tables that extend from it.

You must first delete all records in the
table before you delete the table itself. If you do not first delete the records, errors can
result on the parent table if it references the records. Deleting the records removes any
references from the parent table. To learn more, see [delete the
records in the table](https://servicenow-prod.fluidtopics.net/bXCljHAXGEpmM5BPnfi~PA "You may decide to delete all the records on a table without deleting the table itself. For example, the administrator may want to delete all incidents on a test instance without deleting the incident table itself.").
* **[Delete a custom table](https://servicenow-prod.fluidtopics.net/yLv1ie7h91VZLxv5qh_M_Q)**   
  If you no longer need a custom table, you can delete it after you delete all the records in the table.
* **[Delete all records from a table](https://servicenow-prod.fluidtopics.net/bXCljHAXGEpmM5BPnfi~PA)**   
  You may decide to delete all the records on a table without deleting the table itself. For example, the administrator may want to delete all incidents on a test instance without deleting the incident table itself.