How to make Incident number readonly?

[Eugene3]

No one should be able to change incident number

[AbhishekGardade]

Hello Eugene

You can make it readonly at dictionary level so that no one can update it from list view also.

Right on field label --> configure dictionary --> Mark readonly Checkbox .

Apart from this, there are many ways you can do

1.Using Access Control Rules

2.Creating a UI Policy

3.Client Scripts

Thanks,

Abhishek

[MrMuhammad]

You can use UI policy to achieve this. 

REF - https://docs.servicenow.com/bundle/orlando-platform-administration/page/administer/form-administrati...

Thanks,

Sharjeel

[Suseela Peddise]

Hi,

You can make read-only from dictionary entry ,which applies to all tasks(extended from task table). Please see below.

If you want to make read-only for Incident table, use dictionary overrides.

If I have answered your question, please mark my response as correct and/or helpful.

Thanks,

Suseela P.

[Willem · Accepted solution]

Why do you want to do it? Number is OOTB only editable by the Admin. This is to solve issues in numbering. It is done via a ACL on Task level, which is inherited by all child tables. Setting read-only for everyone makes it harder for admin to resolve numbering issues: