Hi Naveen,
As I experienced the same issue and couldn't find a clear statement on how to solve it, I tried all possible settings referred to in SAP notes, even for outdated releases of SAP CRM.
Eventually I could make the delta work by doing the steps in note 887724:
> Transaction GNRWB
> Select Repository Object as BUS_TRANS_MSG (on the left) having the type as 'MSG'
> Select the Generator (services) : BWA_REL_CHECK (on the right)
> Press Generate.
I got the following log in GNRWB:
BWA_REL_CHECK I Function module /1CRMGC/BUS_TRANS_MSG_BWR created
Hope this will help everyone facing the same issue - this is a pity that SAP does not provide clear guidelines for this.
Bregards,
Laurent Querella