error message "me083" using "BAPI_PR_CHANGE"

Hi,

I´m trying to change a purchase requisition using BAPI_PR_CHANGE but i always got the error message me083 "Enter Cost Center". This requisition was created using BAPI_REQUISITION_CREATE.

I already have populatted the costcenter on the praccount tables.

Any ideias?

Thks

Paulo Paixã