Activity History does not display all the activity posted on the lead.
Issue:
The automation has been triggered for the lead and this automation is
responsible for certain emails to trigger and it has been triggered
successfully without any issue but these triggered email sent activity is not
posted under the Activity History tab.
RCA: If the mail has been triggered successfully and still the activity is not
posted then it may be because of the Elastic search sync issue.
To verify whether this issue caused because of the ESS sync, navigate to the
Lead details page where the activity is not posted, and in the URL add the “&showahv1” word at the last to get the data.
