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https://knowledge-base.havit.cz/2013/04/11/kdyz-wsdl-exevs-hlasi-wsdl-error-wsdl1-item-has-already-been-added-key-in-dictionary-45httpmy-url-compathnegotiate/
Když wsdl.exe/VS hlásí "WSDL: error WSDL1: Item has already been added. Key in dictionary: '[45]:http://my.url.com/path:Negotiate'