How to find who last changed a screen?

Document ID : KB000122235
Last Modified Date : 03/12/2018
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Introduction:
We suddenly notice our standard screen heading got changed in one of our critical models.  How can we find the user id that changed the screen?
Environment:
AS400
iSeries
Instructions:
See attached screen document with steps to find the last user id change.  It only shows the user id of the last change and not a history log.
File Attachments:
AuditLastChanged.docx