When you're using the planner to plan out your feed, you might sometimes see an error saying that there isn't a time slot available.

The error looks like this in the right sidebar timeline:

What this means is that you have dragged a post between two others, but there isn't any time available between the two that would allow that post to be scheduled and posted.
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Sked Social lets our customers only post once every 15 minutes as a way to ensure that we keep your order right, and to minimise spam.

As a result, if you have two posts within 15 minutes of each other already scheduled, you won't be able to put something in-between unless one or both change!

Let's look at this example in a bit more detail. Let's say we started with this grid:

Then we dragged the left image between the other two. As you can see from the top screenshot - this caused us to have a conflict, as the other two "landscape" pictures are scheduled very close together:

Because (A) and (B) are within 15 minutes of each other, we can't find a time to post the third image that would allow it to maintain the 15 minute rule. If I change (A) to be scheduled for a day later, then suddenly I would have a lot of options for when I could schedule the third post. For example:

Alternatively I could have edited B to make it a bit earlier of course, or just changed the order by dragging the third post somewhere else instead.
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If you need any help with this, you can reach our support team here.