Hi Cris,

The "u_" prefix indicates a custom table and cannot be edited or deleted.

Please let me know if you have any questions.

I'm referring to the numbering of the entries on that table, not the table name itself.

So instead of the default "TASK000123" I want to have "YEAH000123".

Alright so I just needed to add the table into the Number Maintenance.

Hi Cris,

OOB the entry will be with the prefix "TASK" for the table task. You might have to change that which would be a global change.

Please refer here for more info.

Managing Record Numbering - ServiceNow Wiki