User exit (To change the PO Release Strategy): M06E0004

Dear Experts,

         I am trying to implement the enhancement for changing the PO release strategy, using exit M06E0004 for following situation.

If PO is already released and then if any changes made to it affects the net amount which makes it less than previous net amount. We have to change the PO Release indicator to 'Blocked'.

We have tried to change the value of  USRC1 USRC2 USRN1 USRN2 of structure E_CEKKO but it is not workingu2026

Please help me *how / what to change in the E_CEKKO structure*.

• I am new to User Exit.