While saving the Purchase order Need to Get Doc Number.

Hi,

I am facing one problem,

Before saving the Document, Whether it is Me21n Or Me22n. Purchase Order Condition types and Amount I need to Get it.

My problem is I would like to Get Po Document Number At Me21N.

How could i Get it.

At Me22n Mode.I can able To capture By using the function module.

EXIT_SAPMM06E_012

Any possibility to get the Document NO. Else Can i consider MaxPonumber from Ekko +1. Will it work.

Else.

Any Exit Triggering After successful Adding the Purchase Order.

Need your suggestions.