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I am getting Error 89 as below when listing a Dutch Auction in Two Categories. How to fix it?
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The reason you are getting this error is because Listing item in two categories functionality is not available for Dutch Auction.
There are restrictions when listing item in two categories.
On eBay.com, you can't list following items in Two Categories:
Adult items, Real Estate, Dutch Auctions and Business & Industrial
Detail information can be found on eBay online document Listing in Two Categories.