Prerequisite Knowledge 

Although you are sending or receiving XML documents when using the IDoc Connector for XML component, you are actually sending or receiving IDocs to or from an R/3 system.

This means that when sending an XML document it must convert to an appropriately structured and valid IDoc, and when receiving an XML document you should know how to interpret it as an IDoc.

You should:

In addition, you or your administrator should be able to set up the ALE and IDoc infrastructure. See Prerequisite Setup.