release strategy

Dear all,

I have set release stragey for po .while checking the release status in 'omgsck' it give error status that the characteristics Z_EKGRP(i have created via cto4) not linked to comunication structure cekko but i can able to release the purchase order in me29n.kindly clarify why it display the error status in 'Omgsck' & how to slove this error.

Regards,

Renuga.A