>> In Pega 7.1.6 -> Flow Action -> History tab -> I don't see Add buttons under Custom fields section, but I see update button.
- Following is the help in 7.1.7 for custom fields:
This section displays a list of name-value pairs, or custom fields, associated with this rule. Click Updateto launch a dialog with options to add, edit, and remove custom fields. Text (string) and File (rule file binary) custom field types are supported.
This section appears for Rule- objects only.
So Update button is the one that needs to be clicked to add custom fields! FYI: In pega 7.1.7, button label is "Add field", but help content refers to Update!!!
Regarding the real time examples, I have never used, but guess it is used to identify set of rules based on a criteria, say for example if I want to tag all rule changes for a particular bug fix then adding the custom field BugID = ' BUG-12345' to the rules modified/created for this bug fix.
Similarly if we want to tag rules for a feature, CR, enhancement, specification etc. May be like a tagging feature?