"Co-deployement only" cannot be used because of assigned system alias(es)
Message no. /IWFND/CM_MGW257
Diagnosis
The system alias assigned to this service has not been flagged as Local SAP GW. Setting the processing mode to Co-deployed only contradicts the current routing.
System Response
The processing mode Co-deployed only cannot be set.
Procedure
If you want to set this processing mode remove the system alias from this service or change the system alias definition first.