Why is NOC Code field empty in our Jobs?

Summary:

We have created common Jobs for all of our business units but we want to update the NOC code field in the job, but the field is empty for us. How do we get values in this field?

Content (required):

How do we get values in the NOC Code field?

Version (include the version you are using, if applicable):

21D

Code Snippet (add any code snippets that support your topic, if applicable):