POD relevance

Hi,

If we make a delivery POD relevant (by making the delivery ItCatg and Ship to Relevant for POD, then we cannot bill the delivery unless the POD status is confirmed.

What makes the system do this? where is it configured?

I checked the copy controls, IMG but could not find anything.

Is the logic hard coded or is it hidden somewhere in any of those copy routines.

Pls suggest

Thanks