Hi All,
As everyone suggested, I check 'Created' eq 'Modified' to differentiate created and modified trigger, it is working only if the SP list item does not have an attachment. When the user adds an attachment to the list during item creation, created and modified time is not the same. 1-sec difference occurred Created:2020-08-05T22:43:45Z and Modified: 2020-08-05T22:43:46Z. Thoroughly checked many times. Now, How to differentiate created and modified trigger in MS Flow when there is an attachment in the SP list.