Suppose that you need to consume the following SOAP web service in your GeneXus application:
http://www.oorsprong.org/websamples.countryinfo/CountryInfoService.wso?WSDL
To do so in GeneXus:
1. Open the WSDL Import Wizard:

2. Inspect the web service's WSDL and import it:
Step 1

Step 2

Step 3

3. Use it in your GeneXus object:
&CountryISOCode = &CountryInfoService.LanguageISOCode("Uruguay")
Where:
&CountryInfoService is a CountryInfoService variable based on the related web service
&CountryISOCode is a Character variable