Hello,
I am very new to Jira. We are trying to auto populate a custom field with the last comment for each issue in a project.
I have followed the steps from various existing resolved posts out there: create custom field > create automation rule to populate the field with the latest comment. The rule works when I only have the custom field in 1 type of issue, but as soon as I add the same custom field to another issue type, I run into problems. What am I doing wrong? Does each issue type within the same project require its own unique custom field name?
Here is the rule I set up:


This is the error I get if I add the same custom field to more than one issue type.

Thanks!