how can I use soapHTTP or soapRPC after genrating soap request message.
Also I would like to know what all information is required to execute these two service.

You’ll want to find and read the Web Services Developer’s Guide and the SOAP Developer’s Guide. SoapRPC is still supported, but has not been a good choice due to interoperability issues for 5+ years now.

Mark

Also, if you are consuming a web service exposed by some other provider, you can use the provider’s WSDL to generate a FLOW service that will build the request message and send it to the provider’s service endpoint URL. You really don’t have to do much custom FLOW development in most cases.

Mark

If you are providing a web service to be consumed by others, you can build your WSDL first and then use the Developer 7.x or 8.x tools to generate a stub FLOW service that can be expanded with the business logic you need to implement the interface described in the WDSL.

Mark

Thanks for you suggestions