Unpublished hubs often carry such warnings. Maybe you have links to more than two external links taking traffic away from HubPages.
HubPages don't mind links within HubPages that keeps views and revenue within HubPages.
I take it that the Hub in question is incomplete?
If so maybe look at any possible links away from HubPages, bring them down to the two most important links.
Also as you write more that could remove this warning. It may be that so far your hub looks to the HubPages spiders as if it is merely a commercial hub. As you provide more data, background, personal stories on the hub, it begins to look like something other than a pure advertisement.
Remember HubPages is patrolled by machines looking for abuse of the system. They are not human and whereas you or I know that an incomplete hub is just that, a work in progress, the spiders see it as a complete work.
Hope this helps.