Node has to change

Hi all ,

There is Typical scenario am facing out where we have to change the message type and also the IDOC type from the PI side .

Actually what happening is from ECC system we are getting a IDOC of ZHRMD .

But we have to change it YHRMD from the PI side so , i have used the External Definition  to change the node.

But the message type and IDOC type has to change to YHRMD .

please help me out .

Regards,

Vijender