How to enhance an Enterprise Service

Hi Experts,

I have a scenario to use ‘BusinessPartnerSUITEBulkReplicateRequest_In’ to send customer masterdata between CRM and MDG systems. There is a need to enhance this standard ES as to pass 10 new fields which is not available in the ES. How can the ES be enhanced without using PI.

I have already referred this document on ES enhancement, https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/c0bb5687-00b2-2a10-ed8f-c9af69942e5d

This document explains how to enhance an ES using SAP PI, but we do not have PI in client’s landscape. Is there a way to enhance, BusinessPartnerSUITEBulkReplicateRequest_In without using PI.

Thanks,

Smitha