The error is harmless and doesn't impact playback, but the query responsible for returning currently scheduled events could be improved to avoid considering the draft.
In the query we join on layouts via their campaign, and exclude drafts (parentId is null):
LEFT OUTER JOIN `campaign`
ON `schedule`.CampaignID = campaign.CampaignID
LEFT OUTER JOIN `lkcampaignlayout`
ON lkcampaignlayout.CampaignID = campaign.CampaignID
LEFT OUTER JOIN `layout`
ON lkcampaignlayout.LayoutID = layout.LayoutID
AND layout.retired = 0
AND layout.parentId IS NULL
However, because this is an OUTER join, we do still get the lkcampaignlayout record, including the link to the draft.
The error is harmless and doesn't impact playback, but the query responsible for returning currently scheduled events could be improved to avoid considering the draft.
In the query we join on layouts via their campaign, and exclude drafts (parentId is null):
However, because this is an OUTER join, we do still get the
lkcampaignlayoutrecord, including the link to the draft.