Interface for Cancellation and change of Sales Orders(SD ECC 6 )

Hi Folks,

Would anyone know the <b>PI interface</b> that is used to cancellation and change the "sales orders" in SD - (ECC 6)?

Technical Name	SalesOrderERPChangeRequestConfirmation_In
Namespace	http://sap.com/xi/APPL/Global2
Latest Software Component Version	SAP APPL 6.06
First Shipped With: Software Component Version	SAP APPL 6.02
First Shipped With: Product Version	EHP2 FOR SAP ERP 6.0 - SAP enhancement package 2 for SAP ERP 6.0
Category	A2X
Direction	inbound
Mode	synchronous
Point-to-Point Communication Enabled	TRUE
Release State	released
Idempotency	available
Business Function(s) required	ESOA_OPS01 - Operations, Enterprise Services
Application Component for Customer Messages	SD-SLS-ES
Related Web Service Definition	ECC_SALESORDERERPCHGRC
WSDL	WSDL (ESR)

we have to design the interface by using the standard WSDL's which is recommended in Enterprise portal.

Change Sales Order Item inbound operation to change a single sales item within a sales order.
Update Sales Order

I would appreciate your inputs on the same, thanks a lot.

Regards,

Satya.