Change of Fund Centre in PO

Hi,

We have posted some PR and PO documents with wrong FM account assignments (Fund, Fund center and commitment items) and now we want to rectify them the combination in open PR and POs.

We expect the budget should consume with the revised FM account assignment combinations.  Tried with FMN4N for POs but could not success.  Can you put some highlight how to overcome the situation.

Regards,

Babjee