Creation of  WSDL file & import it in the creation of automated activity

Hi Friends,
I want to create BPM process for automated activity.I have created task for human activity. I have created CAF Application,but I dont know how to ceate/import WSDL file(This WSDL file is used to assign the interface to the automated activity).Can anyone explain about WSDL file creation and it's significance.
(I am following one document 'Creating BPM Process with Human and Automated Activities' from this link ' https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/501bd56f-a5a6-2b10-4fbf-a61a64055fe4')
Regards,
Pranjali

Hi Pranjali,
WSDL is a document written in XML. The document describes a Web service. It specifies the location of the service and the operations (or methods) the service exposes. WSDL types are used to describe the data. XML Schema is used (inline or referenced) for this purpose.
Refer to the below link for more deatils on WSDL:
http://en.wikipedia.org/wiki/Web_Services_Description_Language
Also there are numerous documents avaiable on this topic, just do a google search.
Hope this helps!!
Cheers,
Arafat

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