If anybody change/edit comment in testrail,is there way to check history?
Thanks for the post! TestRail does not currently store a revision history on comments added to results. However, users would only be able to edit data in their own results and would not be able to edit those of other users, regardless of TestRail permissions. If you are concerned with changes being made to comments or other result data, you can configure the amount of time users have to make these edits under ‘Administration > Site Settings > User Interface.’ Once this time elapses, users would have to submit a new result with updated information, which would be stored in the result history along with the previous result details.
Hope this helps!