Action method call BEA_SEND_IDOC

Hi all!

At the bottom of http://help.sap.com/saphelp_crm60/helpdata/en/b4/b65bc212ff4cdb9f6411d5e385770c/frameset.htm it says that "The methods BEA_SEND_IDOC and BEA_SEND_XML are available with the standard configuration. You can use these to set up electronic output of billing documents using IDoc or XML format respectively."

What are the prerequisites for using these methods? I have added BEA_SEND_IDOC in my action definition but don't know how to procede...

Thank you!

Best Regards

Viktor