Namespace http://idoctoidoc is not defined in the software component versio

Hi experts,

I am new to SAP XI/PI.

I am getting this error.

Namespace http://idoctoidoc is not defined in the software component version

What can be the problem?

please help me regarding this.

I want to execute on of the scenario for idoc to idoc.

Can anybody suggest me the detailed steps for the XI configuration part.

I am trying to execute this scenario.

http://www.saptechnical.com/Tutorials/XI/IDocToIDoc/page1.htm

Manisha