Split Cost centre - PO Commitment

Hi ,

I have a SC - PO with multi account assignment ( 50 % split on 2 cost centres) , this was raised by mistake and i want to Delete the PO to put the commitment back .I can't delete the PO in the back end based on the deployment scenario.I have done the Confirmation for Zero quantity to put the money back but this did not happen.Generally it works for Zero Quantity confrimation every time for single account assignment.

Is there any way to put the commitment back ?

Regards,

Richy