Redefine SRA017_SALESORDER_CREATE issue

hi,

i'm redefining a standard service SRA017_SALESORDER_CREATE in SAP Gateway Netweaver, i want to redefine a standard method : SALESORDER_CREATE_DEEP_ENTITY, in order to work with inquiry table to handle pre-orders.

The method /iwbep/if_mgw_appl_srv_runtime~create_deep_entity should call my specific SALESORDER_CREATE_DEEP_ENTITY redefined like you see here  CALL METHOD me->salesorder_create_deep_entity

But when i debug my sales order create Fiori application, i find that is still calls standard method  salesorder_create_deep_entity from the standard Class and not the one that i redefined as below :

Thank you for your help.

Regards,