Issue
Issue Description
One (or several) of the emails in your Engagement Program stream with Recipient Time Zone enabled failed to send but there was no failure or error message.
You edited the email(s) within 25 hours of the next scheduled cast.
Solution
Issue Resolution
Our Engagement Program documentations states that "We require you to schedule the first cast at least 25 hours in the future because there may be people who qualify for the cast in every time zone across the globe." (https://docs.marketo.com/display/public/DOCS/Schedule+Engagement+Programs+with+Recipient+Time+Zone)This also applies to making edits to emails. If you edit an email in an Engagement Program stream with Recipient Time Zone enabled within 25 hours of the next scheduled cast. The pre-processing is disrupted and the email will fail to send.To avoid the issue please either 1) disable Recipient Time Zone2) refrain from making edits to the Engagement Program streams or assets 25 hours before the next scheduled cast.Who This Solution Applies To Customers using Engagement Program with Recipient Time Zone enabled