Hi Jeff ,
The integration of customer , vehicle can be possible via SAP CRM Middleware to DBM .
VMS has come already come up with adapters to transfer the vehicles to CRM and process further in CRM system.
With regard to transfer of Sales order or service order , the standard middleware settings will not help as it creates the SD orders in the ERP system . For DBM , DBM sales/service order needs to be created and configured properly, as recommended by CRM Middleware, to make it work.
Complaints : I don't have much ideas on this . Normally, if it is used in ERP, it should be available as part of CRM to ERP integration via middleware.
I have a query here : Why do you want to transfer real vehicles to CRM if at all the campaign has to be run ? Models would be more relevant here. right?.
Hope I could answer your question.
Regards,
Roopa