Changing eBay API target site from US to UK

I currently have working project for uploading my products via API to ebay.com (US) website and I am trying to get it to work for eBay's UK website.

What are the parameters I need to change in my API call, besides following.

• SiteId : 3 (UK) (in every call)
• CategorySiteID : 3
• X-EBAY-API-SITEID : 3
• AddFixedPriceItemRequest->Item->Country : UK
• AddFixedPriceItemRequest->Item->Currency : GBP

I have tried to dump request and response object on each step with WarningLevel High with no luck of an error message. Every response gives back success but products do not show up on website. Any help is appreciated.

It was a problem with my configuration on eBay.co.uk site.