SRM - ECC with PI integration

Hi All:

We are currently implementing PI as an integration engine for ECC 6.04 and SRM 7.01 (Classic Scenario).

PO's in ECC is getting created by PI system UserID.

We look at the SOAP Header:

SRM

<SAP:User>'SC Creator UserID'</SAP:User>

ECC

<SAP:User>'PI System UserID'</SAP:User>

We would like to know if there is any configuration that we can do to change this behaviour and make it as the SC Creator UserID?

Any help and/or input is appreciated.

Thanks,

Mike