Thanks! Thats work me :thumbsup::thumbsup::thumbsup:

Im trying to consume this WS and response NULL. I dont know why because when I test it in boomerang tool work good. Please if someone can help me :( The method dont receive parameters and return a string.

using Tassadar.Core.Interfaces;
using ServiceSeedReference;
using System.Threading.Tasks;

namespace Tassadar.Infrastucture.Repositories
{
public class FacturaRepository : IFacturaRepository
{

    public string GetSeedSII()
    {
        string s2;

        CrSeedClient seedClient = new CrSeedClient();

        s2 = seedClient.getSeed(); //RETURN NULL I DONT KNOW WHY

        return s2;
    }

}

}

Is a public WS. wsdl: https://palena.sii.cl/DTEWS/CrSeed.jws?WSDL[^] Thanks!! PD: sorry for my english!