Hi Sharma,
Thanks a lot for the quick help. Sorry for my poor English. In note 89899 solution it says:
"If purchasing documents are also to be output in another language, you can do this making a modification.
Additional information for EDI messages: The above-described system behavior applies for messages that are sent to vendors. If the message is sent to a logical system with medium 6, the language that is entered in the condition record (MN05) is used. If nothing is maintained there, the current logon language is used."
Sorry for my poor English. Does that mean we can modify the routine assigned to the output type? I have been hesitated on that as I am not sure if it is against standard SAP.