Scenario for returnable gate pass

dear all,

can any one guide me how to mapp the scenario for returnable material which are going outside for repairing. In this we need to pring gate pass, need to track inventory & value at vendor also.

I have recommended them combination of 541 & servicing scenario. Pls guid if its possible in SAP or if any development is needed, then wht shud be the path.

regards,