Need PO User/Custom Hook name while Auto-creating PO

Hi All,

We are working on Oracle Apps 11.5.10.2 Version

We want to populate some info on the PO "Description" field at PO Header level while a PO is being created through "Auto-create PO" form for a Purchase Requisition.

Please let me know the Custom/User Hook name which can be utilized for this.

Appreciate any quick inputs on this

Thanks

Pooja