Cost center not populated in BAPI_PO_CREATE1

Environment: IS-Retail solution EhP 5.

Hi,

I am trying to convert my old IDoc type PORDCR to newer IDoc type PORDCR1. PORDCR uses BAPI_PO_CREATE whereas PORDCR1 uses BAPI_PO_CREATE1.

In BAPI_PO_CREATE, I pass the following values:

PO_ITEMS-PO_ITEM = '00010'

PO_ITEMS-ACCTASSCAT = '3'

PO_ITEM_ACCOUNT_ASSIGNMENT-PO_ITEM = '00010'

My G/L account as well as Cost center gets determined and populates in the PO successfully.

In BAPI_PO_CREATE1, I am passing the following values:

POITEM--ACCTASSCAT = '3'

POITEMX--ACCTASSCAT = 'X'

POACCOUNT-PO_ITEM = '00010'

POACCOUNTX-PO_ITEM='00010'

POACCOUNTX-PO_ITEMX='X'

The G/L account gets determined, but cost center does not get determined. Hence throws an error in the BAPI - ME 083 : Enter cost center

My observation:

The cost center determination happens via OKB9 transaction. BAPI_PO_CREATE seems to pick up the configuration values from here whereas BAPI_PO_CREATE1 does not.

My question:

Is BAPI_PO_CREATE1 designed NOT to pick up values from OKB9? Or Am I missing some other parameter to pass in the BAPI?

Any clue/hint is much appreciated.

- Raj