BAPI_PO_Change

Hello everyone,

I am trying to use BAPI_PO_Change in an enhancement of tcode MB01, the field in the po line item is changed and logged and could be found in the Tcode ME22n->MENU->Environment-> ITEM CHANGES. But the PO is not changed, hence the field change is not seen when viewed in ME22n because the database is not commited or updated.

The BAPI return message is also success and says PO is changed, but PO is not changed.

How can i change and update the PO.....

Thanks,

Uma.