A : In default OpenX there is no futures available to restrict two different advertiser’s banners in same page.But we have one idea to achieve this one.
First you need to create those advertiser’s banners under same campaign .
Then while taking invocation code you need to select this future “ Don’t show a banner from the same campaign again on the same page as YES ”
Once you have select this option don’t forget to “refresh” button before take invocation code.
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