Hi Oscar,
>>>>but on Inbound system side XI send error 56/60 on WE02 transaction .
as XI does not process IDOCs with WE02 so everything is fine it's your scenario which is wrongIDOC should be proicessed by PI engine and not via IDOC engine as normal IDOCs don't exists on PI,
Please remove the IDOC from the exception table so it will get processed via PI engine. You should consult your PI/XI consultant in case you hava any doubts.
Regards,
Michal Krawczyk