Standard Contents for SRM SUS

Hello Everybody,

I am working on a scenario in which i am going to use SRM SUS 5.5 standard contents for SAP XI.

Here Scenario is IDOC to Proxy (R/3 IDOC and SUS Proxy) and Proxy to IDOC.

But our client has a requirement to send some extra fields from SUS to R/3. These fields are not available in SUS Proxy structure.

So now my question is, there are going to be just 1-2 fields to be added in structure, so is there any way that i can use the same structure and extend it? can I regenerate the standard proxy and add those fields in structure and implement code in standard proxy classes?

If not, then please give me the solution which might be best for this type of scenarios.

Please let me know for