Make field editable

[Nataliia_Lova]

Hello, folks.

I am new to ServiceNow and a lot of things are not understandable to me.

This is one of them:

I have categories and subcategories in my test application.
There are dependencies:
Bills
Creation
Cancellation
Payment
Expenses
Internal
External
General requests
Internal
External

After submitting a request form I am linked to a form where I can edit more information the subcategory's field is mandatory but read-only even for me (admin).

What is the reason for it?

In the dictionary, this field is not marked as read-only.

In Client-Script and UI Policies, there is also no information about this issue.

What should I do?

[Dr Atul G- LNG]

Hi @Nataliia_Lova 

Did you created table extended from Task?

[Nataliia_Lova]

Yes, my finance_request table was extended from Task. 

[Dr Atul G- LNG]

But Category is not from Task table.

Right click in sub cat and configure choice  and see is the mapping is there or not

Please have a look on OOTB Category and sub category on Incident record.

[Nataliia_Lova]

They are mapped.

In the incident record there are these adjustments: